312999930 has 32 divisors (see below), whose sum is σ = 834667200. Its totient is φ = 83466576.

The previous prime is 312999923. The next prime is 312999941. The reversal of 312999930 is 39999213.

It is a Harshad number since it is a multiple of its sum of digits (45).

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, 579360 + ... + 579899.

It is an arithmetic number, because the mean of its divisors is an integer number (26083350).

Almost surely, 2^312999930 is an apocalyptic number.

312999930 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

312999930 is an abundant number, since it is smaller than the sum of its proper divisors (521667270).

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

312999930 is a wasteful number, since it uses less digits than its factorization.

312999930 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159275 (or 1159269 counting only the distinct ones).

The product of its (nonzero) digits is 118098, while the sum is 45.

The square root of 312999930 is about 17691.8040346371. The cubic root of 312999930 is about 678.9660830286.

The spelling of 312999930 in words is "three hundred twelve million, nine hundred ninety-nine thousand, nine hundred thirty".