312720892 has 96 divisors (see below), whose sum is σ = 645958656. Its totient is φ = 131155200.

The previous prime is 312720887. The next prime is 312720893. The reversal of 312720892 is 298027213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312720893) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4667443 + ... + 4667509.

It is an arithmetic number, because the mean of its divisors is an integer number (6728736).

Almost surely, 2^312720892 is an apocalyptic number.

It is an amenable number.

312720892 is an abundant number, since it is smaller than the sum of its proper divisors (333237764).

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

312720892 is a wasteful number, since it uses less digits than its factorization.

312720892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227 (or 225 counting only the distinct ones).

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 312720892 is about 17683.9161952323. The cubic root of 312720892 is about 678.7642579932.

The spelling of 312720892 in words is "three hundred twelve million, seven hundred twenty thousand, eight hundred ninety-two".