31312741504 has 64 divisors (see below), whose sum is σ = 68153568480. Its totient is φ = 14211788800.

The previous prime is 31312741487. The next prime is 31312741511. The reversal of 31312741504 is 40514721313.

It is a tau number, because it is divible by the number of its divisors (64).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 945384 + ... + 977944.

Almost surely, 2^31312741504 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 31312741504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34076784240).

31312741504 is an abundant number, since it is smaller than the sum of its proper divisors (36840826976).

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

31312741504 is a wasteful number, since it uses less digits than its factorization.

31312741504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33269 (or 33257 counting only the distinct ones).

The product of its (nonzero) digits is 10080, while the sum is 31.

The spelling of 31312741504 in words is "thirty-one billion, three hundred twelve million, seven hundred forty-one thousand, five hundred four".