31634599872 has 112 divisors (see below), whose sum is σ = 88680413952. Its totient is φ = 9918197760.

The previous prime is 31634599837. The next prime is 31634599903. The reversal of 31634599872 is 27899543613.

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 15 ways as a sum of consecutive naturals, for example, 9669597 + ... + 9672867.

Almost surely, 2^31634599872 is an apocalyptic number.

31634599872 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31634599872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (44340206976).

31634599872 is an abundant number, since it is smaller than the sum of its proper divisors (57045814080).

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

31634599872 is a wasteful number, since it uses less digits than its factorization.

31634599872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6266 (or 6256 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 57.

The spelling of 31634599872 in words is "thirty-one billion, six hundred thirty-four million, five hundred ninety-nine thousand, eight hundred seventy-two".