2313111257 has 2 divisors, whose sum is σ = 2313111258. Its totient is φ = 2313111256.

The previous prime is 2313111233. The next prime is 2313111259. The reversal of 2313111257 is 7521113132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2177248921 + 135862336 = 46661^2 + 11656^2 .

It is a cyclic number.

It is not a de Polignac number, because 2313111257 - 2⁶ = 2313111193 is a prime.

Together with 2313111259, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2313111259) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1156555628 + 1156555629.

It is an arithmetic number, because the mean of its divisors is an integer number (1156555629).

Almost surely, 2^2313111257 is an apocalyptic number.

It is an amenable number.

2313111257 is a deficient number, since it is larger than the sum of its proper divisors (1).

2313111257 is an equidigital number, since it uses as much as digits as its factorization.

2313111257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1260, while the sum is 26.

The square root of 2313111257 is about 48094.8152818991. The cubic root of 2313111257 is about 1322.5096227992.

Adding to 2313111257 its reverse (7521113132), we get a palindrome (9834224389).

The spelling of 2313111257 in words is "two billion, three hundred thirteen million, one hundred eleven thousand, two hundred fifty-seven".