312251563305679 has 2 divisors, whose sum is σ = 312251563305680. Its totient is φ = 312251563305678.

The previous prime is 312251563305533. The next prime is 312251563305683. The reversal of 312251563305679 is 976503365152213.

It is a strong prime.

It is an emirp because it is prime and its reverse (976503365152213) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312251563305679 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312251563308679) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156125781652839 + 156125781652840.

It is an arithmetic number, because the mean of its divisors is an integer number (156125781652840).

Almost surely, 2^{312251563305679} is an apocalyptic number.

312251563305679 is a deficient number, since it is larger than the sum of its proper divisors (1).

312251563305679 is an equidigital number, since it uses as much as digits as its factorization.

312251563305679 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30618000, while the sum is 58.

The spelling of 312251563305679 in words is "three hundred twelve trillion, two hundred fifty-one billion, five hundred sixty-three million, three hundred five thousand, six hundred seventy-nine".