712815531318 has 64 divisors (see below), whose sum is σ = 1745147082240. Its totient is φ = 213866028000.

The previous prime is 712815531301. The next prime is 712815531331. The reversal of 712815531318 is 813135518217.

712815531318 is a `hidden beast` number, since 7 + 1 + 2 + 81 + 5 + 531 + 31 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5880730 + ... + 6000717.

It is an arithmetic number, because the mean of its divisors is an integer number (27267923160).

Almost surely, 2^712815531318 is an apocalyptic number.

712815531318 is an abundant number, since it is smaller than the sum of its proper divisors (1032331550922).

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

712815531318 is a wasteful number, since it uses less digits than its factorization.

712815531318 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11881570 (or 11881564 counting only the distinct ones).

The product of its digits is 201600, while the sum is 45.

The spelling of 712815531318 in words is "seven hundred twelve billion, eight hundred fifteen million, five hundred thirty-one thousand, three hundred eighteen".