23431432237 has 2 divisors, whose sum is σ = 23431432238. Its totient is φ = 23431432236.

The previous prime is 23431432147. The next prime is 23431432259. The reversal of 23431432237 is 73223413432.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22378364836 + 1053067401 = 149594^2 + 32451^2 .

It is a cyclic number.

It is not a de Polignac number, because 23431432237 - 2⁷ = 23431432109 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23431432837) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11715716118 + 11715716119.

It is an arithmetic number, because the mean of its divisors is an integer number (11715716119).

Almost surely, 2^23431432237 is an apocalyptic number.

It is an amenable number.

23431432237 is a deficient number, since it is larger than the sum of its proper divisors (1).

23431432237 is an equidigital number, since it uses as much as digits as its factorization.

23431432237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 34.

Adding to 23431432237 its reverse (73223413432), we get a palindrome (96654845669).

The spelling of 23431432237 in words is "twenty-three billion, four hundred thirty-one million, four hundred thirty-two thousand, two hundred thirty-seven".