312111891732 has 72 divisors (see below), whose sum is σ = 737415241696. Its totient is φ = 102745564416.

The previous prime is 312111891703. The next prime is 312111891737. The reversal of 312111891732 is 237198111213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312111891737) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 115296723 + ... + 115299429.

Almost surely, 2^312111891732 is an apocalyptic number.

It is an amenable number.

312111891732 is an abundant number, since it is smaller than the sum of its proper divisors (425303349964).

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

312111891732 is a wasteful number, since it uses less digits than its factorization.

312111891732 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4105 (or 4014 counting only the distinct ones).

The product of its digits is 18144, while the sum is 39.

The spelling of 312111891732 in words is "three hundred twelve billion, one hundred eleven million, eight hundred ninety-one thousand, seven hundred thirty-two".