318431604072 has 32 divisors (see below), whose sum is σ = 796304167200. Its totient is φ = 106113847104.

The previous prime is 318431604041. The next prime is 318431604079. The reversal of 318431604072 is 270406134813.

It is a self number, because there is not a number n which added to its sum of digits gives 318431604072.

It is not an unprimeable number, because it can be changed into a prime (318431604079) 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, 1789603 + ... + 1959474.

It is an arithmetic number, because the mean of its divisors is an integer number (24884505225).

Almost surely, 2^318431604072 is an apocalyptic number.

It is an amenable number.

318431604072 is an abundant number, since it is smaller than the sum of its proper divisors (477872563128).

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

318431604072 is a wasteful number, since it uses less digits than its factorization.

318431604072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3752625 (or 3752621 counting only the distinct ones).

The product of its (nonzero) digits is 96768, while the sum is 39.

Adding to 318431604072 its reverse (270406134813), we get a palindrome (588837738885).

The spelling of 318431604072 in words is "three hundred eighteen billion, four hundred thirty-one million, six hundred four thousand, seventy-two".