2311563157 has 2 divisors, whose sum is σ = 2311563158. Its totient is φ = 2311563156.

The previous prime is 2311563103. The next prime is 2311563173. The reversal of 2311563157 is 7513651132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2277293841 + 34269316 = 47721^2 + 5854^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2311563157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2311563757) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1155781578 + 1155781579.

It is an arithmetic number, because the mean of its divisors is an integer number (1155781579).

Almost surely, 2^2311563157 is an apocalyptic number.

It is an amenable number.

2311563157 is a deficient number, since it is larger than the sum of its proper divisors (1).

2311563157 is an equidigital number, since it uses as much as digits as its factorization.

2311563157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18900, while the sum is 34.

The square root of 2311563157 is about 48078.7183377427. The cubic root of 2311563157 is about 1322.2145175145.

The spelling of 2311563157 in words is "two billion, three hundred eleven million, five hundred sixty-three thousand, one hundred fifty-seven".