337

337 is the natural number that comes after 336 and before 338. It is an odd number and a prime number, meaning its only positive divisors are 1 and 337.

In mathematics, 337 is prime. It is not a square or a cube, and the sum of its decimal digits is 13, so it is not divisible by 3. Its representations in various bases include binary 101010001, octal 521, and hexadecimal 0x151. In Roman numerals it is written as CCCXXXVII. The number is congruent to 1 modulo 3 and 1 modulo 4.

Beyond pure math, 337 has practical uses as well. In the North American Numbering Plan, area code 337 serves southwestern Louisiana, including Lafayette and Lake Charles; it was introduced in 1999 as a split from area code 318. Historically, the year 337 CE marks the death of Constantine the Great and the subsequent accession and division of the Roman Empire among his three sons.