23397513 has 4 divisors (see below), whose sum is σ = 31196688. Its totient is φ = 15598340.

The previous prime is 23397503. The next prime is 23397523. The reversal of 23397513 is 31579332.

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 an interprime number because it is at equal distance from previous prime (23397503) and next prime (23397523).

It is a cyclic number.

It is not a de Polignac number, because 23397513 - 2⁴ = 23397497 is a prime.

It is a super-2 number, since 2×23397513² = 1094887229170338, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23397503) 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, 3899583 + ... + 3899588.

It is an arithmetic number, because the mean of its divisors is an integer number (7799172).

Almost surely, 2^23397513 is an apocalyptic number.

It is an amenable number.

23397513 is a deficient number, since it is larger than the sum of its proper divisors (7799175).

23397513 is an equidigital number, since it uses as much as digits as its factorization.

23397513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7799174.

The product of its digits is 17010, while the sum is 33.

The square root of 23397513 is about 4837.0975801611. The cubic root of 23397513 is about 286.0157171013.

The spelling of 23397513 in words is "twenty-three million, three hundred ninety-seven thousand, five hundred thirteen".