231042303431 has 2 divisors, whose sum is σ = 231042303432. Its totient is φ = 231042303430.

The previous prime is 231042303421. The next prime is 231042303433. The reversal of 231042303431 is 134303240132.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-231042303431 is a prime.

It is a super-2 number, since 2×231042303431² (a number of 24 digits) contains 22 as substring.

Together with 231042303433, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 231042303431.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (231042303433) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 115521151715 + 115521151716.

It is an arithmetic number, because the mean of its divisors is an integer number (115521151716).

Almost surely, 2^231042303431 is an apocalyptic number.

231042303431 is a deficient number, since it is larger than the sum of its proper divisors (1).

231042303431 is an equidigital number, since it uses as much as digits as its factorization.

231042303431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 231042303431 its reverse (134303240132), we get a palindrome (365345543563).

The spelling of 231042303431 in words is "two hundred thirty-one billion, forty-two million, three hundred three thousand, four hundred thirty-one".