231030663431 has 2 divisors, whose sum is σ = 231030663432. Its totient is φ = 231030663430.

The previous prime is 231030663319. The next prime is 231030663443. The reversal of 231030663431 is 134366030132.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 231030663431 - 2²² = 231026469127 is a prime.

It is a super-2 number, since 2×231030663431² (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 (231030663131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115515331715 + 115515331716.

It is an arithmetic number, because the mean of its divisors is an integer number (115515331716).

Almost surely, 2^231030663431 is an apocalyptic number.

231030663431 is a deficient number, since it is larger than the sum of its proper divisors (1).

231030663431 is an equidigital number, since it uses as much as digits as its factorization.

231030663431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 32.

Adding to 231030663431 its reverse (134366030132), we get a palindrome (365396693563).

The spelling of 231030663431 in words is "two hundred thirty-one billion, thirty million, six hundred sixty-three thousand, four hundred thirty-one".