231246011257 has 2 divisors, whose sum is σ = 231246011258. Its totient is φ = 231246011256.

The previous prime is 231246011233. The next prime is 231246011261. The reversal of 231246011257 is 752110642132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 212059329001 + 19186682256 = 460499^2 + 138516^2 .

It is a cyclic number.

It is not a de Polignac number, because 231246011257 - 2³⁵ = 196886272889 is a prime.

It is not a weakly prime, because it can be changed into another prime (231246011207) 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, 115623005628 + 115623005629.

It is an arithmetic number, because the mean of its divisors is an integer number (115623005629).

Almost surely, 2^231246011257 is an apocalyptic number.

It is an amenable number.

231246011257 is a deficient number, since it is larger than the sum of its proper divisors (1).

231246011257 is an equidigital number, since it uses as much as digits as its factorization.

231246011257 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 34.

Adding to 231246011257 its reverse (752110642132), we get a palindrome (983356653389).

The spelling of 231246011257 in words is "two hundred thirty-one billion, two hundred forty-six million, eleven thousand, two hundred fifty-seven".