31356168712 has 32 divisors (see below), whose sum is σ = 64949500800. Its totient is φ = 14072385600.

The previous prime is 31356168677. The next prime is 31356168737. The reversal of 31356168712 is 21786165313.

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, 2248239 + ... + 2262142.

It is an arithmetic number, because the mean of its divisors is an integer number (2029671900).

Almost surely, 2^31356168712 is an apocalyptic number.

It is an amenable number.

31356168712 is an abundant number, since it is smaller than the sum of its proper divisors (33593332088).

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

31356168712 is a wasteful number, since it uses less digits than its factorization.

31356168712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4510477 (or 4510473 counting only the distinct ones).

The product of its digits is 181440, while the sum is 43.

The spelling of 31356168712 in words is "thirty-one billion, three hundred fifty-six million, one hundred sixty-eight thousand, seven hundred twelve".