231303125857 has 2 divisors, whose sum is σ = 231303125858. Its totient is φ = 231303125856.

The previous prime is 231303125843. The next prime is 231303125863. The reversal of 231303125857 is 758521303132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 231268657216 + 34468641 = 480904^2 + 5871^2 .

It is a cyclic number.

It is not a de Polignac number, because 231303125857 - 2²³ = 231294737249 is a prime.

It is a super-2 number, since 2×231303125857² (a number of 24 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (231303125827) 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, 115651562928 + 115651562929.

It is an arithmetic number, because the mean of its divisors is an integer number (115651562929).

Almost surely, 2^231303125857 is an apocalyptic number.

It is an amenable number.

231303125857 is a deficient number, since it is larger than the sum of its proper divisors (1).

231303125857 is an equidigital number, since it uses as much as digits as its factorization.

231303125857 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 151200, while the sum is 40.

Adding to 231303125857 its reverse (758521303132), we get a palindrome (989824428989).

The spelling of 231303125857 in words is "two hundred thirty-one billion, three hundred three million, one hundred twenty-five thousand, eight hundred fifty-seven".