23133919 has 4 divisors (see below), whose sum is σ = 23450896. Its totient is φ = 22816944.

The previous prime is 23133899. The next prime is 23133937. The reversal of 23133919 is 91933132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 23133919 - 2¹⁵ = 23101151 is a prime.

It is a super-2 number, since 2×23133919² = 1070356416597122, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23133419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158379 + ... + 158524.

It is an arithmetic number, because the mean of its divisors is an integer number (5862724).

Almost surely, 2^23133919 is an apocalyptic number.

23133919 is a deficient number, since it is larger than the sum of its proper divisors (316977).

23133919 is an equidigital number, since it uses as much as digits as its factorization.

23133919 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316976.

The product of its digits is 4374, while the sum is 31.

The square root of 23133919 is about 4809.7732794800. The cubic root of 23133919 is about 284.9375835409.

The spelling of 23133919 in words is "twenty-three million, one hundred thirty-three thousand, nine hundred nineteen".