312897942 has 48 divisors (see below), whose sum is σ = 799798272. Its totient is φ = 86514480.

The previous prime is 312897917. The next prime is 312897979. The reversal of 312897942 is 249798213.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36148 + ... + 43959.

It is an arithmetic number, because the mean of its divisors is an integer number (16662464).

Almost surely, 2^312897942 is an apocalyptic number.

312897942 is an abundant number, since it is smaller than the sum of its proper divisors (486900330).

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

312897942 is a wasteful number, since it uses less digits than its factorization.

312897942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80153 (or 80150 counting only the distinct ones).

The product of its digits is 217728, while the sum is 45.

The square root of 312897942 is about 17688.9214481833. The cubic root of 312897942 is about 678.8923301736.

The spelling of 312897942 in words is "three hundred twelve million, eight hundred ninety-seven thousand, nine hundred forty-two".