31900681396 has 12 divisors (see below), whose sum is σ = 55889421952. Its totient is φ = 15932275128.

The previous prime is 31900681369. The next prime is 31900681399. The reversal of 31900681396 is 69318600913.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31900681399) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4512420 + ... + 4519483.

Almost surely, 2^31900681396 is an apocalyptic number.

It is an amenable number.

31900681396 is a deficient number, since it is larger than the sum of its proper divisors (23988740556).

31900681396 is a wasteful number, since it uses less digits than its factorization.

31900681396 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9032790 (or 9032788 counting only the distinct ones).

The product of its (nonzero) digits is 209952, while the sum is 46.

The spelling of 31900681396 in words is "thirty-one billion, nine hundred million, six hundred eighty-one thousand, three hundred ninety-six".