312915420 has 48 divisors (see below), whose sum is σ = 973516320. Its totient is φ = 83443968.

The previous prime is 312915371. The next prime is 312915433. The reversal of 312915420 is 24519213.

312915420 is a `hidden beast` number, since 31 + 2 + 91 + 542 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 289197 + ... + 290276.

It is an arithmetic number, because the mean of its divisors is an integer number (20281590).

Almost surely, 2^312915420 is an apocalyptic number.

312915420 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

312915420 is an abundant number, since it is smaller than the sum of its proper divisors (660600900).

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

312915420 is a wasteful number, since it uses less digits than its factorization.

312915420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 579491 (or 579483 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 312915420 is about 17689.4154793198. The cubic root of 312915420 is about 678.9049705670.

The spelling of 312915420 in words is "three hundred twelve million, nine hundred fifteen thousand, four hundred twenty".