313131056 has 40 divisors (see below), whose sum is σ = 704743584. Its totient is φ = 131996160.

The previous prime is 313131047. The next prime is 313131079. The reversal of 313131056 is 650131313.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16085 + ... + 29748.

Almost surely, 2^313131056 is an apocalyptic number.

It is an amenable number.

313131056 is an abundant number, since it is smaller than the sum of its proper divisors (391612528).

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

313131056 is a wasteful number, since it uses less digits than its factorization.

313131056 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45909 (or 45903 counting only the distinct ones).

The product of its (nonzero) digits is 810, while the sum is 23.

The square root of 313131056 is about 17695.5094868727. The cubic root of 313131056 is about 679.0608835577.

Adding to 313131056 its reverse (650131313), we get a palindrome (963262369).

The spelling of 313131056 in words is "three hundred thirteen million, one hundred thirty-one thousand, fifty-six".