23452309 has 2 divisors, whose sum is σ = 23452310. Its totient is φ = 23452308.

The previous prime is 23452307. The next prime is 23452313. The reversal of 23452309 is 90325432.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20729809 + 2722500 = 4553^2 + 1650^2 .

It is a cyclic number.

It is not a de Polignac number, because 23452309 - 2¹ = 23452307 is a prime.

Together with 23452307, it forms a pair of twin primes.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23452307) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11726154 + 11726155.

It is an arithmetic number, because the mean of its divisors is an integer number (11726155).

Almost surely, 2^23452309 is an apocalyptic number.

It is an amenable number.

23452309 is a deficient number, since it is larger than the sum of its proper divisors (1).

23452309 is an equidigital number, since it uses as much as digits as its factorization.

23452309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6480, while the sum is 28.

The square root of 23452309 is about 4842.7584081802. The cubic root of 23452309 is about 286.2388219862.

The spelling of 23452309 in words is "twenty-three million, four hundred fifty-two thousand, three hundred nine".