23009133 has 16 divisors (see below), whose sum is σ = 36907520. Its totient is φ = 12455856.

The previous prime is 23009101. The next prime is 23009149. The reversal of 23009133 is 33190032.

23009133 is nontrivially palindromic in base 13.

It is not a de Polignac number, because 23009133 - 2⁵ = 23009101 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23009033) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28435 + ... + 29232.

It is an arithmetic number, because the mean of its divisors is an integer number (2306720).

Almost surely, 2^23009133 is an apocalyptic number.

It is an amenable number.

23009133 is a deficient number, since it is larger than the sum of its proper divisors (13898387).

23009133 is a wasteful number, since it uses less digits than its factorization.

23009133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57696.

The product of its (nonzero) digits is 486, while the sum is 21.

The square root of 23009133 is about 4796.7836098786. The cubic root of 23009133 is about 284.4243350867.

Adding to 23009133 its reverse (33190032), we get a palindrome (56199165).

The spelling of 23009133 in words is "twenty-three million, nine thousand, one hundred thirty-three".