311668418287 has 2 divisors, whose sum is σ = 311668418288. Its totient is φ = 311668418286.

The previous prime is 311668418213. The next prime is 311668418311. The reversal of 311668418287 is 782814866113.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-311668418287 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311668428287) 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, 155834209143 + 155834209144.

It is an arithmetic number, because the mean of its divisors is an integer number (155834209144).

Almost surely, 2^311668418287 is an apocalyptic number.

311668418287 is a deficient number, since it is larger than the sum of its proper divisors (1).

311668418287 is an equidigital number, since it uses as much as digits as its factorization.

311668418287 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3096576, while the sum is 55.

The spelling of 311668418287 in words is "three hundred eleven billion, six hundred sixty-eight million, four hundred eighteen thousand, two hundred eighty-seven".