231312454057 has 2 divisors, whose sum is σ = 231312454058. Its totient is φ = 231312454056.

The previous prime is 231312454027. The next prime is 231312454063. The reversal of 231312454057 is 750454213132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 189472160656 + 41840293401 = 435284^2 + 204549^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231312454057 is a prime.

It is not a weakly prime, because it can be changed into another prime (231312454007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115656227028 + 115656227029.

It is an arithmetic number, because the mean of its divisors is an integer number (115656227029).

Almost surely, 2^231312454057 is an apocalyptic number.

It is an amenable number.

231312454057 is a deficient number, since it is larger than the sum of its proper divisors (1).

231312454057 is an equidigital number, since it uses as much as digits as its factorization.

231312454057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 100800, while the sum is 37.

Adding to 231312454057 its reverse (750454213132), we get a palindrome (981766667189).

The spelling of 231312454057 in words is "two hundred thirty-one billion, three hundred twelve million, four hundred fifty-four thousand, fifty-seven".