23030309 has 2 divisors, whose sum is σ = 23030310. Its totient is φ = 23030308.

The previous prime is 23030297. The next prime is 23030333. The reversal of 23030309 is 90303032.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12285025 + 10745284 = 3505^2 + 3278^2 .

It is a cyclic number.

It is not a de Polignac number, because 23030309 - 2²⁰ = 21981733 is a prime.

It is a super-3 number, since 3×23030309³ (a number of 23 digits) contains 333 as substring.

It is a Chen prime.

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 (23030389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11515154 + 11515155.

It is an arithmetic number, because the mean of its divisors is an integer number (11515155).

Almost surely, 2^23030309 is an apocalyptic number.

It is an amenable number.

23030309 is a deficient number, since it is larger than the sum of its proper divisors (1).

23030309 is an equidigital number, since it uses as much as digits as its factorization.

23030309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 20.

The square root of 23030309 is about 4798.9904146602. The cubic root of 23030309 is about 284.5115631011.

The spelling of 23030309 in words is "twenty-three million, thirty thousand, three hundred nine".