31837312793136 has 80 divisors (see below), whose sum is σ = 88915017804800. Its totient is φ = 9782161530624.

The previous prime is 31837312793113. The next prime is 31837312793179. The reversal of 31837312793136 is 63139721373813.

It is a happy number.

It is a super-2 number, since 2×31837312793136² (a number of 28 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 471714016 + ... + 471781503.

It is an arithmetic number, because the mean of its divisors is an integer number (1111437722560).

Almost surely, 2^{31837312793136} is an apocalyptic number.

It is an amenable number.

31837312793136 is an abundant number, since it is smaller than the sum of its proper divisors (57077705011664).

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

31837312793136 is a wasteful number, since it uses less digits than its factorization.

31837312793136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943495586 (or 943495580 counting only the distinct ones).

The product of its digits is 10287648, while the sum is 57.

The spelling of 31837312793136 in words is "thirty-one trillion, eight hundred thirty-seven billion, three hundred twelve million, seven hundred ninety-three thousand, one hundred thirty-six".