31900692308 has 12 divisors (see below), whose sum is σ = 55878835572. Its totient is φ = 15935310720.

The previous prime is 31900692149. The next prime is 31900692361. The reversal of 31900692308 is 80329600913.

It can be written as a sum of positive squares in 2 ways, for example, as 7539101584 + 24361590724 = 86828^2 + 156082^2 .

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3754085 + ... + 3762572.

It is an arithmetic number, because the mean of its divisors is an integer number (4656569631).

Almost surely, 2^31900692308 is an apocalyptic number.

It is an amenable number.

31900692308 is a deficient number, since it is larger than the sum of its proper divisors (23978143264).

31900692308 is a wasteful number, since it uses less digits than its factorization.

31900692308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7517722 (or 7517720 counting only the distinct ones).

The product of its (nonzero) digits is 69984, while the sum is 41.

The spelling of 31900692308 in words is "thirty-one billion, nine hundred million, six hundred ninety-two thousand, three hundred eight".