312246642913 has 2 divisors, whose sum is σ = 312246642914. Its totient is φ = 312246642912.

The previous prime is 312246642739. The next prime is 312246642971. The reversal of 312246642913 is 319246642213.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 310948986384 + 1297656529 = 557628^2 + 36023^2 .

It is an emirp because it is prime and its reverse (319246642213) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312246642913 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 312246642913.

It is not a weakly prime, because it can be changed into another prime (312246643913) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156123321456 + 156123321457.

It is an arithmetic number, because the mean of its divisors is an integer number (156123321457).

Almost surely, 2^312246642913 is an apocalyptic number.

It is an amenable number.

312246642913 is a deficient number, since it is larger than the sum of its proper divisors (1).

312246642913 is an equidigital number, since it uses as much as digits as its factorization.

312246642913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 43.

The spelling of 312246642913 in words is "three hundred twelve billion, two hundred forty-six million, six hundred forty-two thousand, nine hundred thirteen".