23397813 has 12 divisors (see below), whose sum is σ = 33852000. Its totient is φ = 15573096.

The previous prime is 23397811. The next prime is 23397817. The reversal of 23397813 is 31879332.

It is a happy number.

It is not a de Polignac number, because 23397813 - 2¹ = 23397811 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23397811) 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, 4938 + ... + 8436.

It is an arithmetic number, because the mean of its divisors is an integer number (2821000).

Almost surely, 2^23397813 is an apocalyptic number.

It is an amenable number.

23397813 is a deficient number, since it is larger than the sum of its proper divisors (10454187).

23397813 is a wasteful number, since it uses less digits than its factorization.

23397813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4248 (or 4245 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 23397813 is about 4837.1285903933. The cubic root of 23397813 is about 286.0169395154.

The spelling of 23397813 in words is "twenty-three million, three hundred ninety-seven thousand, eight hundred thirteen".