23000309 has 2 divisors, whose sum is σ = 23000310. Its totient is φ = 23000308.

The previous prime is 23000293. The next prime is 23000311. The reversal of 23000309 is 90300032.

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., 17724100 + 5276209 = 4210^2 + 2297^2 .

It is a cyclic number.

It is not a de Polignac number, because 23000309 - 2⁴ = 23000293 is a prime.

Together with 23000311, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23000009) 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, 11500154 + 11500155.

It is an arithmetic number, because the mean of its divisors is an integer number (11500155).

Almost surely, 2^23000309 is an apocalyptic number.

It is an amenable number.

23000309 is a deficient number, since it is larger than the sum of its proper divisors (1).

23000309 is an equidigital number, since it uses as much as digits as its factorization.

23000309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 23000309 is about 4795.8637386815. The cubic root of 23000309 is about 284.3879715373.

The spelling of 23000309 in words is "twenty-three million, three hundred nine", and thus it is an aban number.