31179407712 has 48 divisors (see below), whose sum is σ = 82028343600. Its totient is φ = 10369974272.

The previous prime is 31179407671. The next prime is 31179407731. The reversal of 31179407712 is 21770497113.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×31179407712² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 318573 + ... + 404780.

It is an arithmetic number, because the mean of its divisors is an integer number (1708923825).

Almost surely, 2^31179407712 is an apocalyptic number.

31179407712 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31179407712 is an abundant number, since it is smaller than the sum of its proper divisors (50848935888).

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

31179407712 is a wasteful number, since it uses less digits than its factorization.

31179407712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 723815 (or 723807 counting only the distinct ones).

The product of its (nonzero) digits is 74088, while the sum is 42.

The spelling of 31179407712 in words is "thirty-one billion, one hundred seventy-nine million, four hundred seven thousand, seven hundred twelve".