312491610492 has 72 divisors (see below), whose sum is σ = 793081296000. Its totient is φ = 95498218080.

The previous prime is 312491610491. The next prime is 312491610527. The reversal of 312491610492 is 294016194213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312491610491) by changing a digit.

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 in 23 ways as a sum of consecutive naturals, for example, 493992 + ... + 932207.

It is an arithmetic number, because the mean of its divisors is an integer number (11015018000).

Almost surely, 2^312491610492 is an apocalyptic number.

It is an amenable number.

312491610492 is an abundant number, since it is smaller than the sum of its proper divisors (480589685508).

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

312491610492 is a wasteful number, since it uses less digits than its factorization.

312491610492 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1426287 (or 1426254 counting only the distinct ones).

The product of its (nonzero) digits is 93312, while the sum is 42.

The spelling of 312491610492 in words is "three hundred twelve billion, four hundred ninety-one million, six hundred ten thousand, four hundred ninety-two".