23133959 has 4 divisors (see below), whose sum is σ = 23526120. Its totient is φ = 22741800.

The previous prime is 23133947. The next prime is 23133973. The reversal of 23133959 is 95933132.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23133959 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23133359) 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, 195992 + ... + 196109.

It is an arithmetic number, because the mean of its divisors is an integer number (5881530).

Almost surely, 2^23133959 is an apocalyptic number.

23133959 is a deficient number, since it is larger than the sum of its proper divisors (392161).

23133959 is an equidigital number, since it uses as much as digits as its factorization.

23133959 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 392160.

The product of its digits is 21870, while the sum is 35.

The square root of 23133959 is about 4809.7774376784. Note that the first 3 decimals coincide. The cubic root of 23133959 is about 284.9377477658.

The spelling of 23133959 in words is "twenty-three million, one hundred thirty-three thousand, nine hundred fifty-nine".