31394723952 has 40 divisors (see below), whose sum is σ = 83899697040. Its totient is φ = 10104048640.

The previous prime is 31394723917. The next prime is 31394723993. The reversal of 31394723952 is 25932749313.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 11275449 + ... + 11278232.

It is an arithmetic number, because the mean of its divisors is an integer number (2097492426).

Almost surely, 2^31394723952 is an apocalyptic number.

It is an amenable number.

31394723952 is an abundant number, since it is smaller than the sum of its proper divisors (52504973088).

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

31394723952 is a wasteful number, since it uses less digits than its factorization.

31394723952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22553721 (or 22553715 counting only the distinct ones).

The product of its digits is 1224720, while the sum is 48.

The spelling of 31394723952 in words is "thirty-one billion, three hundred ninety-four million, seven hundred twenty-three thousand, nine hundred fifty-two".