312609994 has 16 divisors (see below), whose sum is σ = 488234376. Its totient is φ = 149990400.

The previous prime is 312609989. The next prime is 312610009. The reversal of 312609994 is 499906213.

It can be written as a sum of positive squares in 4 ways, for example, as 78978769 + 233631225 = 8887^2 + 15285^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 312609994.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26247 + ... + 36250.

Almost surely, 2^312609994 is an apocalyptic number.

312609994 is a deficient number, since it is larger than the sum of its proper divisors (175624382).

312609994 is a wasteful number, since it uses less digits than its factorization.

312609994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62601.

The product of its (nonzero) digits is 104976, while the sum is 43.

The square root of 312609994 is about 17680.7803560816. The cubic root of 312609994 is about 678.6840133828.

The spelling of 312609994 in words is "three hundred twelve million, six hundred nine thousand, nine hundred ninety-four".