231342342131 has 2 divisors, whose sum is σ = 231342342132. Its totient is φ = 231342342130.

The previous prime is 231342342097. The next prime is 231342342157. The reversal of 231342342131 is 131243243132.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231342342131 is a prime.

It is a super-2 number, since 2×231342342131² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 231342342094 and 231342342103.

It is not a weakly prime, because it can be changed into another prime (231342342431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115671171065 + 115671171066.

It is an arithmetic number, because the mean of its divisors is an integer number (115671171066).

Almost surely, 2^231342342131 is an apocalyptic number.

231342342131 is a deficient number, since it is larger than the sum of its proper divisors (1).

231342342131 is an equidigital number, since it uses as much as digits as its factorization.

231342342131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 29.

Adding to 231342342131 its reverse (131243243132), we get a palindrome (362585585263).

The spelling of 231342342131 in words is "two hundred thirty-one billion, three hundred forty-two million, three hundred forty-two thousand, one hundred thirty-one".