Homonym: 31 (Prime)
The number "31" is an integer that follows 30 and precedes 32. It is an odd number and can be classified as a prime number, meaning it has no divisors other than 1 and itself. In mathematics, it is often used in various calculations and can represent quantities in everyday life.
In the context of the calendar, 31 is significant because several months, including January, March, May, July, August, October, and December, have 31 days. This number also appears in various cultural references, such as the 31st of October, which is celebrated as Halloween in many countries.