2317311391 has 2 divisors, whose sum is σ = 2317311392. Its totient is φ = 2317311390.

The previous prime is 2317311319. The next prime is 2317311397. The reversal of 2317311391 is 1931137132.

Together with previous prime (2317311319) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2317311391 - 2⁷ = 2317311263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2317311397) 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, 1158655695 + 1158655696.

It is an arithmetic number, because the mean of its divisors is an integer number (1158655696).

Almost surely, 2^2317311391 is an apocalyptic number.

2317311391 is a deficient number, since it is larger than the sum of its proper divisors (1).

2317311391 is an equidigital number, since it uses as much as digits as its factorization.

2317311391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3402, while the sum is 31.

The square root of 2317311391 is about 48138.4606214200. The cubic root of 2317311391 is about 1323.3096072253.

The spelling of 2317311391 in words is "two billion, three hundred seventeen million, three hundred eleven thousand, three hundred ninety-one".