23965213 has 4 divisors (see below), whose sum is σ = 25226560. Its totient is φ = 22703868.

The previous prime is 23965199. The next prime is 23965231. The reversal of 23965213 is 31256932.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23965213 - 2⁵ = 23965181 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 (23965013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 630645 + ... + 630682.

It is an arithmetic number, because the mean of its divisors is an integer number (6306640).

Almost surely, 2^23965213 is an apocalyptic number.

It is an amenable number.

23965213 is a deficient number, since it is larger than the sum of its proper divisors (1261347).

23965213 is a wasteful number, since it uses less digits than its factorization.

23965213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1261346.

The product of its digits is 9720, while the sum is 31.

The square root of 23965213 is about 4895.4277647617. The cubic root of 23965213 is about 288.3104812952.

The spelling of 23965213 in words is "twenty-three million, nine hundred sixty-five thousand, two hundred thirteen".