23124809 has 2 divisors, whose sum is σ = 23124810. Its totient is φ = 23124808.

The previous prime is 23124769. The next prime is 23124817. The reversal of 23124809 is 90842132.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 14440000 + 8684809 = 3800^2 + 2947^2 .

It is a cyclic number.

It is not a de Polignac number, because 23124809 - 2⁸ = 23124553 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (23124869) by changing a digit.

It is a good prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11562404 + 11562405.

It is an arithmetic number, because the mean of its divisors is an integer number (11562405).

Almost surely, 2^23124809 is an apocalyptic number.

It is an amenable number.

23124809 is a deficient number, since it is larger than the sum of its proper divisors (1).

23124809 is an equidigital number, since it uses as much as digits as its factorization.

23124809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 23124809 is about 4808.8261561425. The cubic root of 23124809 is about 284.9001763871.

The spelling of 23124809 in words is "twenty-three million, one hundred twenty-four thousand, eight hundred nine".