31928145696 has 72 divisors (see below), whose sum is σ = 92150879184. Its totient is φ = 10483862400.

The previous prime is 31928145653. The next prime is 31928145793. The reversal of 31928145696 is 69654182913.

31928145696 is a `hidden beast` number, since 319 + 281 + 45 + 6 + 9 + 6 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 808030 + ... + 846621.

It is an arithmetic number, because the mean of its divisors is an integer number (1279873322).

Almost surely, 2^31928145696 is an apocalyptic number.

31928145696 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

31928145696 is an abundant number, since it is smaller than the sum of its proper divisors (60222733488).

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

31928145696 is a wasteful number, since it uses less digits than its factorization.

31928145696 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1654734 (or 1654723 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 54.

The spelling of 31928145696 in words is "thirty-one billion, nine hundred twenty-eight million, one hundred forty-five thousand, six hundred ninety-six".