31643764374 has 16 divisors (see below), whose sum is σ = 64481633712. Its totient is φ = 10348903968.

The previous prime is 31643764367. The next prime is 31643764387. The reversal of 31643764374 is 47346734613.

It is a super-2 number, since 2×31643764374² (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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49754029 + ... + 49754664.

It is an arithmetic number, because the mean of its divisors is an integer number (4030102107).

Almost surely, 2^31643764374 is an apocalyptic number.

31643764374 is an abundant number, since it is smaller than the sum of its proper divisors (32837869338).

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

31643764374 is a wasteful number, since it uses less digits than its factorization.

31643764374 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99508751.

The product of its digits is 3048192, while the sum is 48.

The spelling of 31643764374 in words is "thirty-one billion, six hundred forty-three million, seven hundred sixty-four thousand, three hundred seventy-four".