312990784 has 14 divisors (see below), whose sum is σ = 621091214. Its totient is φ = 156495360.

The previous prime is 312990763. The next prime is 312990793. The reversal of 312990784 is 487099213.

It can be written as a sum of positive squares in only one way, i.e., 307230784 + 5760000 = 17528^2 + 2400^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 312990784.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2445177 + ... + 2445304.

Almost surely, 2^312990784 is an apocalyptic number.

It is an amenable number.

312990784 is a deficient number, since it is larger than the sum of its proper divisors (308100430).

312990784 is an equidigital number, since it uses as much as digits as its factorization.

312990784 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4890493 (or 4890483 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The square root of 312990784 is about 17691.5455514774. The cubic root of 312990784 is about 678.9594697318.

The spelling of 312990784 in words is "three hundred twelve million, nine hundred ninety thousand, seven hundred eighty-four".