23133915 has 36 divisors (see below), whose sum is σ = 45996912. Its totient is φ = 10536480.

The previous prime is 23133899. The next prime is 23133937. The reversal of 23133915 is 51933132.

It is a happy number.

It is not a de Polignac number, because 23133915 - 2⁴ = 23133899 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 85230 + ... + 85500.

It is an arithmetic number, because the mean of its divisors is an integer number (1277692).

Almost surely, 2^23133915 is an apocalyptic number.

23133915 is a deficient number, since it is larger than the sum of its proper divisors (22862997).

23133915 is an equidigital number, since it uses as much as digits as its factorization.

23133915 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 560 (or 286 counting only the distinct ones).

The product of its digits is 2430, while the sum is 27.

The square root of 23133915 is about 4809.7728636600. The cubic root of 23133915 is about 284.9375671184.

The spelling of 23133915 in words is "twenty-three million, one hundred thirty-three thousand, nine hundred fifteen".