31012699392 has 90 divisors (see below), whose sum is σ = 92474319938. Its totient is φ = 10337559552.

The previous prime is 31012699387. The next prime is 31012699397. The reversal of 31012699392 is 29399621013.

It is an interprime number because it is at equal distance from previous prime (31012699387) and next prime (31012699397).

It can be written as a sum of positive squares in only one way, i.e., 23696292096 + 7316407296 = 153936^2 + 85536^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31012699397) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 727063 + ... + 768534.

Almost surely, 2^31012699392 is an apocalyptic number.

31012699392 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

31012699392 is an abundant number, since it is smaller than the sum of its proper divisors (61461620546).

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

31012699392 is an equidigital number, since it uses as much as digits as its factorization.

31012699392 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1495625 (or 1495602 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 45.

The spelling of 31012699392 in words is "thirty-one billion, twelve million, six hundred ninety-nine thousand, three hundred ninety-two".