315856 has 20 divisors (see below), whose sum is σ = 644800. Its totient is φ = 149472.

The previous prime is 315851. The next prime is 315857. The reversal of 315856 is 658513.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315851) by changing a digit.

315856 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 216 + ... + 823.

It is an arithmetic number, because the mean of its divisors is an integer number (32240).

2³¹⁵⁸⁵⁶ is an apocalyptic number.

It is an amenable number.

315856 is an abundant number, since it is smaller than the sum of its proper divisors (328944).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

315856 is a wasteful number, since it uses less digits than its factorization.

315856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1066 (or 1060 counting only the distinct ones).

The product of its digits is 3600, while the sum is 28.

The square root of 315856 is about 562.0106760552. The cubic root of 315856 is about 68.1024982498.

The spelling of 315856 in words is "three hundred fifteen thousand, eight hundred fifty-six".