Pronunciation: [θˌɜːtɪwˈɒn] (IPA) 
The word "thirtyone" is spelled /ˈθɜːti wʌn/. The first syllable starts with the voiced dental fricative /ð/ and the vowel sound is a short "e" sound /ɜː/. The second syllable starts with a voiced dental fricative /θ/ followed by the vowel sound "er" /ɜː/. The last syllable is spelled with a "w" and an "o" which make an "uh" sound /ʌ/ and ends with a silent n /n/. Therefore, the correct spelling for the number 31 is "thirtyone".
Thirtyone is a numerical term that represents the cardinal number for the quantity or value that follows the number thirty and precedes the number thirty-two. It is written as 31 in common numeric notation.
In terms of its composition, the term "thirtyone" consists of two distinct elements: "thirty," which refers to the number 30 and "one," which represents the number 1. When these elements are combined, they denote a specific quantity or position in a sequence.
Thirtyone has various applications across different contexts. It can represent a particular day in the month, such as the thirty-first day of January. It is also commonly used to describe an individual's age or the number of years since a significant event or milestone. In sports, the term could denote a player's jersey number, or the score of one team in a 31-point victory.
Additionally, the term "thirtyone" can be employed to illustrate the number of items in a defined set or collection. For instance, in a game involving 31 cards, candies, or any other objects, "thirtyone" would highlight the precise quantity available or required.
Overall, thirtyone is an integral component of the numerical sequence, holding its unique place after thirty and before thirty-two. Its significance can be observed in various domains, ranging from dates to age, sports, and quantities, all depending on the specific context of its application.
The word "thirtyone" is a compound word formed by combining the cardinal number "thirty" and the cardinal number "one". "Thirty" comes from the Old English word "þritig", which can be traced back to Proto-Germanic "thritigaz". Similarly, "one" comes from the Old English word "ān", which can be traced back to Proto-Germanic "ainaz". Therefore, the etymology of "thirtyone" is derived from the combination of these two Old English words.
