31295949078912 has 128 divisors (see below), whose sum is σ = 95141094048000. Its totient is φ = 8928943564800.

The previous prime is 31295949078881. The next prime is 31295949078929. The reversal of 31295949078912 is 21987094959213.

It is a tau number, because it is divible by the number of its divisors (128).

It is a super-2 number, since 2×31295949078912² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6420162 + ... + 10188737.

It is an arithmetic number, because the mean of its divisors is an integer number (743289797250).

Almost surely, 2^{31295949078912} is an apocalyptic number.

31295949078912 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31295949078912 is an abundant number, since it is smaller than the sum of its proper divisors (63845144969088).

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

31295949078912 is a wasteful number, since it uses less digits than its factorization.

31295949078912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16609624 (or 16609612 counting only the distinct ones).

The product of its (nonzero) digits is 88179840, while the sum is 69.

The spelling of 31295949078912 in words is "thirty-one trillion, two hundred ninety-five billion, nine hundred forty-nine million, seventy-eight thousand, nine hundred twelve".