31213114400988 has 72 divisors (see below), whose sum is σ = 85176782418000. Its totient is φ = 9580553392896.

The previous prime is 31213114400959. The next prime is 31213114400989. The reversal of 31213114400988 is 88900441131213.

31213114400988 is a `hidden beast` number, since 3 + 12 + 131 + 14 + 400 + 98 + 8 = 666.

It is a super-2 number, since 2×31213114400988² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31213114400989) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 81342438 + ... + 81725261.

Almost surely, 2^{31213114400988} is an apocalyptic number.

It is an amenable number.

31213114400988 is an abundant number, since it is smaller than the sum of its proper divisors (53963668017012).

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

31213114400988 is a wasteful number, since it uses less digits than its factorization.

31213114400988 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163068131 (or 163068126 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 45.

The spelling of 31213114400988 in words is "thirty-one trillion, two hundred thirteen billion, one hundred fourteen million, four hundred thousand, nine hundred eighty-eight".