23996309 has 2 divisors, whose sum is σ = 23996310. Its totient is φ = 23996308.

The previous prime is 23996267. The next prime is 23996321. The reversal of 23996309 is 90369932.

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., 15382084 + 8614225 = 3922^2 + 2935^2 .

It is a cyclic number.

It is not a de Polignac number, because 23996309 - 2⁸ = 23996053 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23996339) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11998154 + 11998155.

It is an arithmetic number, because the mean of its divisors is an integer number (11998155).

Almost surely, 2^23996309 is an apocalyptic number.

It is an amenable number.

23996309 is a deficient number, since it is larger than the sum of its proper divisors (1).

23996309 is an equidigital number, since it uses as much as digits as its factorization.

23996309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78732, while the sum is 41.

The square root of 23996309 is about 4898.6027599715. The cubic root of 23996309 is about 288.4351262390.

The spelling of 23996309 in words is "twenty-three million, nine hundred ninety-six thousand, three hundred nine".