231304120457 has 2 divisors, whose sum is σ = 231304120458. Its totient is φ = 231304120456.

The previous prime is 231304120391. The next prime is 231304120469. The reversal of 231304120457 is 754021403132.

231304120457 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., 203014226041 + 28289894416 = 450571^2 + 168196^2 .

It is a cyclic number.

It is not a de Polignac number, because 231304120457 - 2¹² = 231304116361 is a prime.

It is a super-2 number, since 2×231304120457² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (231304120477) 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, 115652060228 + 115652060229.

It is an arithmetic number, because the mean of its divisors is an integer number (115652060229).

Almost surely, 2^231304120457 is an apocalyptic number.

It is an amenable number.

231304120457 is a deficient number, since it is larger than the sum of its proper divisors (1).

231304120457 is an equidigital number, since it uses as much as digits as its factorization.

231304120457 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 20160, while the sum is 32.

Adding to 231304120457 its reverse (754021403132), we get a palindrome (985325523589).

The spelling of 231304120457 in words is "two hundred thirty-one billion, three hundred four million, one hundred twenty thousand, four hundred fifty-seven".