31913889004704 has 192 divisors, whose sum is σ = 101959510254336. Its totient is φ = 8532279312384.

The previous prime is 31913889004703. The next prime is 31913889004727. The reversal of 31913889004704 is 40740098831913.

It is a happy number.

It is a super-2 number, since 2×31913889004704² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (31913889004703) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6097587 + ... + 10050290.

It is an arithmetic number, because the mean of its divisors is an integer number (531039115908).

Almost surely, 2^{31913889004704} is an apocalyptic number.

31913889004704 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

31913889004704 is an abundant number, since it is smaller than the sum of its proper divisors (70045621249632).

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

31913889004704 is a wasteful number, since it uses less digits than its factorization.

31913889004704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16148087 (or 16148079 counting only the distinct ones).

The product of its (nonzero) digits is 5225472, while the sum is 57.

The spelling of 31913889004704 in words is "thirty-one trillion, nine hundred thirteen billion, eight hundred eighty-nine million, four thousand, seven hundred four".