231301230131 has 2 divisors, whose sum is σ = 231301230132. Its totient is φ = 231301230130.

The previous prime is 231301230113. The next prime is 231301230161. The reversal of 231301230131 is 131032103132.

Together with previous prime (231301230113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231301230131 is a prime.

It is a super-2 number, since 2×231301230131² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (231301230161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115650615065 + 115650615066.

It is an arithmetic number, because the mean of its divisors is an integer number (115650615066).

Almost surely, 2^231301230131 is an apocalyptic number.

231301230131 is a deficient number, since it is larger than the sum of its proper divisors (1).

231301230131 is an equidigital number, since it uses as much as digits as its factorization.

231301230131 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 20.

Adding to 231301230131 its reverse (131032103132), we get a palindrome (362333333263).

The spelling of 231301230131 in words is "two hundred thirty-one billion, three hundred one million, two hundred thirty thousand, one hundred thirty-one".