23307813 has 12 divisors (see below), whose sum is σ = 35439040. Its totient is φ = 14720616.

The previous prime is 23307787. The next prime is 23307821. The reversal of 23307813 is 31870332.

It is not a de Polignac number, because 23307813 - 2¹⁶ = 23242277 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23307113) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67981 + ... + 68322.

Almost surely, 2^23307813 is an apocalyptic number.

It is an amenable number.

23307813 is a deficient number, since it is larger than the sum of its proper divisors (12131227).

23307813 is a wasteful number, since it uses less digits than its factorization.

23307813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 136328 (or 136325 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 23307813 is about 4827.8165872369. The cubic root of 23307813 is about 285.6497456483.

The spelling of 23307813 in words is "twenty-three million, three hundred seven thousand, eight hundred thirteen".