23137393 has 4 divisors (see below), whose sum is σ = 23185008. Its totient is φ = 23089780.

The previous prime is 23137363. The next prime is 23137399. The reversal of 23137393 is 39373132.

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 23137393 - 2¹³ = 23129201 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23137399) 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, 23071 + ... + 24052.

It is an arithmetic number, because the mean of its divisors is an integer number (5796252).

Almost surely, 2^23137393 is an apocalyptic number.

It is an amenable number.

23137393 is a deficient number, since it is larger than the sum of its proper divisors (47615).

23137393 is an equidigital number, since it uses as much as digits as its factorization.

23137393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47614.

The product of its digits is 10206, while the sum is 31.

The square root of 23137393 is about 4810.1344056066. The cubic root of 23137393 is about 284.9518457680.

The spelling of 23137393 in words is "twenty-three million, one hundred thirty-seven thousand, three hundred ninety-three".