2319

2319 is an integer in the decimal number system. It is odd and composite, with prime factorization 3 × 773, making it a semiprime (the product of two primes). The sum of its digits is 15, so it is divisible by 3 but not by 9.

In common numeral systems, 2319 is represented as binary 100100001111, and in hexadecimal it is 0x90F. In the Roman numeral system it is written as MMCCCXIX. The number is not a palindrome in base 10.

Calendar and cultural usage of 2319 is largely contextual. As a year, 2319 CE falls in the 24th century (2301–2400). In fiction and speculative writing, 2319 is sometimes used to denote a far-future setting or to label a model, project, or codename, but such uses vary by author and context and are not tied to a single canonical reference. Beyond these usages, 2319 functions primarily as an ordinary integer with the mathematical properties noted above.