23431432331 has 2 divisors, whose sum is σ = 23431432332. Its totient is φ = 23431432330.

The previous prime is 23431432327. The next prime is 23431432351. The reversal of 23431432331 is 13323413432.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 23431432331 - 2² = 23431432327 is a prime.

It is a super-2 number, since 2×23431432331² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23431432294 and 23431432303.

It is not a weakly prime, because it can be changed into another prime (23431432351) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11715716165 + 11715716166.

It is an arithmetic number, because the mean of its divisors is an integer number (11715716166).

Almost surely, 2^23431432331 is an apocalyptic number.

23431432331 is a deficient number, since it is larger than the sum of its proper divisors (1).

23431432331 is an equidigital number, since it uses as much as digits as its factorization.

23431432331 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 29.

Adding to 23431432331 its reverse (13323413432), we get a palindrome (36754845763).

The spelling of 23431432331 in words is "twenty-three billion, four hundred thirty-one million, four hundred thirty-two thousand, three hundred thirty-one".