312491610394 has 8 divisors (see below), whose sum is σ = 468820350900. Its totient is φ = 156218160096.

The previous prime is 312491610383. The next prime is 312491610401. The reversal of 312491610394 is 493016194213.

It can be written as a sum of positive squares in 2 ways, for example, as 273908829769 + 38582780625 = 523363^2 + 196425^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 312491610394.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13808419 + ... + 13831030.

Almost surely, 2^312491610394 is an apocalyptic number.

312491610394 is a deficient number, since it is larger than the sum of its proper divisors (156328740506).

312491610394 is a wasteful number, since it uses less digits than its factorization.

312491610394 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27645104.

The product of its (nonzero) digits is 139968, while the sum is 43.

The spelling of 312491610394 in words is "three hundred twelve billion, four hundred ninety-one million, six hundred ten thousand, three hundred ninety-four".