315908 has 6 divisors (see below), whose sum is σ = 552846. Its totient is φ = 157952.

The previous prime is 315907. The next prime is 315937. The reversal of 315908 is 809513.

It can be written as a sum of positive squares in only one way, i.e., 315844 + 64 = 562^2 + 8^2 .

It is not an unprimeable number, because it can be changed into a prime (315907) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 39485 + ... + 39492.

It is an arithmetic number, because the mean of its divisors is an integer number (92141).

2³¹⁵⁹⁰⁸ is an apocalyptic number.

It is an amenable number.

315908 is a deficient number, since it is larger than the sum of its proper divisors (236938).

315908 is a wasteful number, since it uses less digits than its factorization.

315908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78981 (or 78979 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 26.

The square root of 315908 is about 562.0569366176. The cubic root of 315908 is about 68.1062353279.

The spelling of 315908 in words is "three hundred fifteen thousand, nine hundred eight".