31380633892 has 6 divisors (see below), whose sum is σ = 54916109318. Its totient is φ = 15690316944.

The previous prime is 31380633857. The next prime is 31380633919. The reversal of 31380633892 is 29833608313.

It can be written as a sum of positive squares in only one way, i.e., 31199569956 + 181063936 = 176634^2 + 13456^2 .

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 as a sum of consecutive naturals, namely, 3922579233 + ... + 3922579240.

Almost surely, 2^31380633892 is an apocalyptic number.

It is an amenable number.

31380633892 is a deficient number, since it is larger than the sum of its proper divisors (23535475426).

31380633892 is a wasteful number, since it uses less digits than its factorization.

31380633892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7845158477 (or 7845158475 counting only the distinct ones).

The product of its (nonzero) digits is 559872, while the sum is 46.

The spelling of 31380633892 in words is "thirty-one billion, three hundred eighty million, six hundred thirty-three thousand, eight hundred ninety-two".