2311325557 has 2 divisors, whose sum is σ = 2311325558. Its totient is φ = 2311325556.

The previous prime is 2311325521. The next prime is 2311325561. The reversal of 2311325557 is 7555231132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2235965796 + 75359761 = 47286^2 + 8681^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2311325557 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2311325567) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1155662778 + 1155662779.

It is an arithmetic number, because the mean of its divisors is an integer number (1155662779).

Almost surely, 2^2311325557 is an apocalyptic number.

It is an amenable number.

2311325557 is a deficient number, since it is larger than the sum of its proper divisors (1).

2311325557 is an equidigital number, since it uses as much as digits as its factorization.

2311325557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31500, while the sum is 34.

The square root of 2311325557 is about 48076.2473265125. The cubic root of 2311325557 is about 1322.1692135489.

Adding to 2311325557 its reverse (7555231132), we get a palindrome (9866556689).

The spelling of 2311325557 in words is "two billion, three hundred eleven million, three hundred twenty-five thousand, five hundred fifty-seven".