31013230232137 has 2 divisors, whose sum is σ = 31013230232138. Its totient is φ = 31013230232136.

The previous prime is 31013230232027. The next prime is 31013230232209. The reversal of 31013230232137 is 73123203231013.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 29053275031881 + 1959955200256 = 5390109^2 + 1399984^2 .

It is a cyclic number.

It is not a de Polignac number, because 31013230232137 - 2²⁷ = 31013096014409 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 31013230232099 and 31013230232108.

It is not a weakly prime, because it can be changed into another prime (31013230232837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15506615116068 + 15506615116069.

It is an arithmetic number, because the mean of its divisors is an integer number (15506615116069).

Almost surely, 2^{31013230232137} is an apocalyptic number.

It is an amenable number.

31013230232137 is a deficient number, since it is larger than the sum of its proper divisors (1).

31013230232137 is an equidigital number, since it uses as much as digits as its factorization.

31013230232137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13608, while the sum is 31.

The spelling of 31013230232137 in words is "thirty-one trillion, thirteen billion, two hundred thirty million, two hundred thirty-two thousand, one hundred thirty-seven".