231312311057 has 2 divisors, whose sum is σ = 231312311058. Its totient is φ = 231312311056.

The previous prime is 231312311011. The next prime is 231312311099. The reversal of 231312311057 is 750113213132.

231312311057 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 224760379921 + 6551931136 = 474089^2 + 80944^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231312311057 is a prime.

It is not a weakly prime, because it can be changed into another prime (231312311257) 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, 115656155528 + 115656155529.

It is an arithmetic number, because the mean of its divisors is an integer number (115656155529).

Almost surely, 2^231312311057 is an apocalyptic number.

It is an amenable number.

231312311057 is a deficient number, since it is larger than the sum of its proper divisors (1).

231312311057 is an equidigital number, since it uses as much as digits as its factorization.

231312311057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3780, while the sum is 29.

Adding to 231312311057 its reverse (750113213132), we get a palindrome (981425524189).

The spelling of 231312311057 in words is "two hundred thirty-one billion, three hundred twelve million, three hundred eleven thousand, fifty-seven".