23431432289 has 2 divisors, whose sum is σ = 23431432290. Its totient is φ = 23431432288.

The previous prime is 23431432273. The next prime is 23431432319. The reversal of 23431432289 is 98223413432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11797652689 + 11633779600 = 108617^2 + 107860^2 .

It is a cyclic number.

It is not a de Polignac number, because 23431432289 - 2⁴ = 23431432273 is a prime.

It is a super-2 number, since 2×23431432289² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (23431432259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11715716144 + 11715716145.

It is an arithmetic number, because the mean of its divisors is an integer number (11715716145).

Almost surely, 2^23431432289 is an apocalyptic number.

It is an amenable number.

23431432289 is a deficient number, since it is larger than the sum of its proper divisors (1).

23431432289 is an equidigital number, since it uses as much as digits as its factorization.

23431432289 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 248832, while the sum is 41.

It can be divided in two parts, 2343143 and 2289, that added together give a palindrome (2345432).

The spelling of 23431432289 in words is "twenty-three billion, four hundred thirty-one million, four hundred thirty-two thousand, two hundred eighty-nine".