312916718693 has 2 divisors, whose sum is σ = 312916718694. Its totient is φ = 312916718692.

The previous prime is 312916718603. The next prime is 312916718707. The reversal of 312916718693 is 396817619213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 296858253409 + 16058465284 = 544847^2 + 126722^2 .

It is a cyclic number.

It is not a de Polignac number, because 312916718693 - 2¹² = 312916714597 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312916718603) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156458359346 + 156458359347.

It is an arithmetic number, because the mean of its divisors is an integer number (156458359347).

Almost surely, 2^312916718693 is an apocalyptic number.

It is an amenable number.

312916718693 is a deficient number, since it is larger than the sum of its proper divisors (1).

312916718693 is an equidigital number, since it uses as much as digits as its factorization.

312916718693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2939328, while the sum is 56.

The spelling of 312916718693 in words is "three hundred twelve billion, nine hundred sixteen million, seven hundred eighteen thousand, six hundred ninety-three".