311456561407 has 2 divisors, whose sum is σ = 311456561408. Its totient is φ = 311456561406.

The previous prime is 311456561389. The next prime is 311456561413. The reversal of 311456561407 is 704165654113.

It is a strong prime.

It is an emirp because it is prime and its reverse (704165654113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 311456561407 - 2⁷ = 311456561279 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311450561407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155728280703 + 155728280704.

It is an arithmetic number, because the mean of its divisors is an integer number (155728280704).

Almost surely, 2^311456561407 is an apocalyptic number.

311456561407 is a deficient number, since it is larger than the sum of its proper divisors (1).

311456561407 is an equidigital number, since it uses as much as digits as its factorization.

311456561407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 302400, while the sum is 43.

The spelling of 311456561407 in words is "three hundred eleven billion, four hundred fifty-six million, five hundred sixty-one thousand, four hundred seven".