23397137 has 4 divisors (see below), whose sum is σ = 23746416. Its totient is φ = 23047860.

The previous prime is 23397131. The next prime is 23397139. The reversal of 23397137 is 73179332.

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 a de Polignac number, because none of the positive numbers 2^k-23397137 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 23397097 and 23397106.

It is not an unprimeable number, because it can be changed into a prime (23397131) 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, 174539 + ... + 174672.

It is an arithmetic number, because the mean of its divisors is an integer number (5936604).

Almost surely, 2^23397137 is an apocalyptic number.

It is an amenable number.

23397137 is a deficient number, since it is larger than the sum of its proper divisors (349279).

23397137 is an equidigital number, since it uses as much as digits as its factorization.

23397137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 349278.

The product of its digits is 23814, while the sum is 35.

The square root of 23397137 is about 4837.0587137226. The cubic root of 23397137 is about 286.0141849942.

The spelling of 23397137 in words is "twenty-three million, three hundred ninety-seven thousand, one hundred thirty-seven".