230131201957 has 2 divisors, whose sum is σ = 230131201958. Its totient is φ = 230131201956.

The previous prime is 230131201921. The next prime is 230131202071. The reversal of 230131201957 is 759102131032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 182153118436 + 47978083521 = 426794^2 + 219039^2 .

It is a cyclic number.

It is not a de Polignac number, because 230131201957 - 2⁷ = 230131201829 is a prime.

It is a super-2 number, since 2×230131201957² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (230131201357) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115065600978 + 115065600979.

It is an arithmetic number, because the mean of its divisors is an integer number (115065600979).

Almost surely, 2^230131201957 is an apocalyptic number.

It is an amenable number.

230131201957 is a deficient number, since it is larger than the sum of its proper divisors (1).

230131201957 is an equidigital number, since it uses as much as digits as its factorization.

230131201957 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11340, while the sum is 34.

Adding to 230131201957 its reverse (759102131032), we get a palindrome (989233332989).

The spelling of 230131201957 in words is "two hundred thirty billion, one hundred thirty-one million, two hundred one thousand, nine hundred fifty-seven".