231422242031 has 2 divisors, whose sum is σ = 231422242032. Its totient is φ = 231422242030.

The previous prime is 231422242013. The next prime is 231422242069. The reversal of 231422242031 is 130242224132.

Together with previous prime (231422242013) 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-231422242031 is a prime.

It is a super-2 number, since 2×231422242031² (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 (231422242091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115711121015 + 115711121016.

It is an arithmetic number, because the mean of its divisors is an integer number (115711121016).

Almost surely, 2^231422242031 is an apocalyptic number.

231422242031 is a deficient number, since it is larger than the sum of its proper divisors (1).

231422242031 is an equidigital number, since it uses as much as digits as its factorization.

231422242031 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 26.

Adding to 231422242031 its reverse (130242224132), we get a palindrome (361664466163).

The spelling of 231422242031 in words is "two hundred thirty-one billion, four hundred twenty-two million, two hundred forty-two thousand, thirty-one".