318956972 has 24 divisors (see below), whose sum is σ = 573619200. Its totient is φ = 155097936.

The previous prime is 318956969. The next prime is 318956977. The reversal of 318956972 is 279659813.

It is a self number, because there is not a number n which added to its sum of digits gives 318956972.

It is not an unprimeable number, because it can be changed into a prime (318956977) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37229 + ... + 44987.

It is an arithmetic number, because the mean of its divisors is an integer number (23900800).

Almost surely, 2^318956972 is an apocalyptic number.

It is an amenable number.

318956972 is a deficient number, since it is larger than the sum of its proper divisors (254662228).

318956972 is a wasteful number, since it uses less digits than its factorization.

318956972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8045 (or 8043 counting only the distinct ones).

The product of its digits is 816480, while the sum is 50.

The square root of 318956972 is about 17859.3665061222. The cubic root of 318956972 is about 683.2464227889.

The spelling of 318956972 in words is "three hundred eighteen million, nine hundred fifty-six thousand, nine hundred seventy-two".