232131312137 has 2 divisors, whose sum is σ = 232131312138. Its totient is φ = 232131312136.

The previous prime is 232131312131. The next prime is 232131312223. The reversal of 232131312137 is 731213131232.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 227487025936 + 4644286201 = 476956^2 + 68149^2 .

It is a cyclic number.

It is not a de Polignac number, because 232131312137 - 2¹⁶ = 232131246601 is a prime.

It is not a weakly prime, because it can be changed into another prime (232131312131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 116065656068 + 116065656069.

It is an arithmetic number, because the mean of its divisors is an integer number (116065656069).

Almost surely, 2^232131312137 is an apocalyptic number.

It is an amenable number.

232131312137 is a deficient number, since it is larger than the sum of its proper divisors (1).

232131312137 is an equidigital number, since it uses as much as digits as its factorization.

232131312137 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4536, while the sum is 29.

Adding to 232131312137 its reverse (731213131232), we get a palindrome (963344443369).

The spelling of 232131312137 in words is "two hundred thirty-two billion, one hundred thirty-one million, three hundred twelve thousand, one hundred thirty-seven".