23043452309 has 2 divisors, whose sum is σ = 23043452310. Its totient is φ = 23043452308.

The previous prime is 23043452297. The next prime is 23043452323. The reversal of 23043452309 is 90325434032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17535586084 + 5507866225 = 132422^2 + 74215^2 .

It is a cyclic number.

It is not a de Polignac number, because 23043452309 - 2³² = 18748485013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23043452609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11521726154 + 11521726155.

It is an arithmetic number, because the mean of its divisors is an integer number (11521726155).

Almost surely, 2^23043452309 is an apocalyptic number.

It is an amenable number.

23043452309 is a deficient number, since it is larger than the sum of its proper divisors (1).

23043452309 is an equidigital number, since it uses as much as digits as its factorization.

23043452309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 35.

The spelling of 23043452309 in words is "twenty-three billion, forty-three million, four hundred fifty-two thousand, three hundred nine".