315731064 has 64 divisors (see below), whose sum is σ = 884384640. Its totient is φ = 93087360.

The previous prime is 315731057. The next prime is 315731071. The reversal of 315731064 is 460137513.

It is an interprime number because it is at equal distance from previous prime (315731057) and next prime (315731071).

It is a super-2 number, since 2×315731064² = 199372209549144192, which contains 22 as substring.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6394 + ... + 25929.

It is an arithmetic number, because the mean of its divisors is an integer number (13818510).

Almost surely, 2^315731064 is an apocalyptic number.

It is an amenable number.

315731064 is an abundant number, since it is smaller than the sum of its proper divisors (568653576).

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

315731064 is a wasteful number, since it uses less digits than its factorization.

315731064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32380 (or 32376 counting only the distinct ones).

The product of its (nonzero) digits is 7560, while the sum is 30.

The square root of 315731064 is about 17768.8228085037. The cubic root of 315731064 is about 680.9351781168.

Adding to 315731064 its reverse (460137513), we get a palindrome (775868577).

The spelling of 315731064 in words is "three hundred fifteen million, seven hundred thirty-one thousand, sixty-four".