31604577312 has 96 divisors (see below), whose sum is σ = 103433186304. Its totient is φ = 8208979200.

The previous prime is 31604577271. The next prime is 31604577331. The reversal of 31604577312 is 21377540613.

It is a tau number, because it is divible by the number of its divisors (96).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

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 15 ways as a sum of consecutive naturals, for example, 2130364 + ... + 2145147.

It is an arithmetic number, because the mean of its divisors is an integer number (1077429024).

Almost surely, 2^31604577312 is an apocalyptic number.

31604577312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31604577312 is an abundant number, since it is smaller than the sum of its proper divisors (71828608992).

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

31604577312 is a wasteful number, since it uses less digits than its factorization.

31604577312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4275542 (or 4275534 counting only the distinct ones).

The product of its (nonzero) digits is 105840, while the sum is 39.

The spelling of 31604577312 in words is "thirty-one billion, six hundred four million, five hundred seventy-seven thousand, three hundred twelve".