318255 has 24 divisors (see below), whose sum is σ = 593712. Its totient is φ = 145152.

The previous prime is 318247. The next prime is 318259. The reversal of 318255 is 552813.

It is not a de Polignac number, because 318255 - 2³ = 318247 is a prime.

It is an Ulam number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 318255.

It is not an unprimeable number, because it can be changed into a prime (318259) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 519 + ... + 951.

It is an arithmetic number, because the mean of its divisors is an integer number (24738).

2³¹⁸²⁵⁵ is an apocalyptic number.

318255 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

318255 is a deficient number, since it is larger than the sum of its proper divisors (275457).

318255 is a wasteful number, since it uses less digits than its factorization.

318255 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 455 (or 448 counting only the distinct ones).

The product of its digits is 1200, while the sum is 24.

The square root of 318255 is about 564.1409398368. The cubic root of 318255 is about 68.2744816840.

The spelling of 318255 in words is "three hundred eighteen thousand, two hundred fifty-five".