318285 has 24 divisors (see below), whose sum is σ = 602784. Its totient is φ = 154080.

The previous prime is 318281. The next prime is 318287. The reversal of 318285 is 582813.

It is a happy number.

318285 is nontrivially palindromic in base 7.

It is not a de Polignac number, because 318285 - 2² = 318281 is a prime.

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 318285.

It is not an unprimeable number, because it can be changed into a prime (318281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 174 + ... + 816.

It is an arithmetic number, because the mean of its divisors is an integer number (25116).

2³¹⁸²⁸⁵ is an apocalyptic number.

It is an amenable number.

318285 is a deficient number, since it is larger than the sum of its proper divisors (284499).

318285 is a wasteful number, since it uses less digits than its factorization.

318285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 665 (or 662 counting only the distinct ones).

The product of its digits is 1920, while the sum is 27.

The square root of 318285 is about 564.1675283105. The cubic root of 318285 is about 68.2766268926.

The spelling of 318285 in words is "three hundred eighteen thousand, two hundred eighty-five".