31377992012 has 48 divisors (see below), whose sum is σ = 59007281760. Its totient is φ = 14547456000.

The previous prime is 31377991999. The next prime is 31377992027. The reversal of 31377992012 is 21029977313.

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, 1691387 + ... + 1709837.

It is an arithmetic number, because the mean of its divisors is an integer number (1229318370).

Almost surely, 2^31377992012 is an apocalyptic number.

It is an amenable number.

31377992012 is a deficient number, since it is larger than the sum of its proper divisors (27629289748).

31377992012 is a wasteful number, since it uses less digits than its factorization.

31377992012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18842 (or 18840 counting only the distinct ones).

The product of its (nonzero) digits is 142884, while the sum is 44.

The spelling of 31377992012 in words is "thirty-one billion, three hundred seventy-seven million, nine hundred ninety-two thousand, twelve".