31377505488 has 40 divisors (see below), whose sum is σ = 92638350528. Its totient is φ = 8965001472.

The previous prime is 31377505469. The next prime is 31377505499. The reversal of 31377505488 is 88450577313.

It is a self number, because there is not a number n which added to its sum of digits gives 31377505488.

It is a congruent number.

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, 46692381 + ... + 46693052.

Almost surely, 2^31377505488 is an apocalyptic number.

It is an amenable number.

31377505488 is an abundant number, since it is smaller than the sum of its proper divisors (61260845040).

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

31377505488 is a wasteful number, since it uses less digits than its factorization.

31377505488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93385451 (or 93385445 counting only the distinct ones).

The product of its (nonzero) digits is 2822400, while the sum is 51.

The spelling of 31377505488 in words is "thirty-one billion, three hundred seventy-seven million, five hundred five thousand, four hundred eighty-eight".