31200665612 has 24 divisors (see below), whose sum is σ = 55790910000. Its totient is φ = 15262094016.

The previous prime is 31200665599. The next prime is 31200665623. The reversal of 31200665612 is 21656600213.

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, 136862 + ... + 284837.

It is an arithmetic number, because the mean of its divisors is an integer number (2324621250).

Almost surely, 2^31200665612 is an apocalyptic number.

It is an amenable number.

31200665612 is a deficient number, since it is larger than the sum of its proper divisors (24590244388).

31200665612 is a wasteful number, since it uses less digits than its factorization.

31200665612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 422105 (or 422103 counting only the distinct ones).

The product of its (nonzero) digits is 12960, while the sum is 32.

The spelling of 31200665612 in words is "thirty-one billion, two hundred million, six hundred sixty-five thousand, six hundred twelve".