23145133 has 4 divisors (see below), whose sum is σ = 25249248. Its totient is φ = 21041020.

The previous prime is 23145119. The next prime is 23145167. The reversal of 23145133 is 33154132.

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 not a de Polignac number, because 23145133 - 2¹³ = 23136941 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 (23145113) 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, 1052041 + ... + 1052062.

It is an arithmetic number, because the mean of its divisors is an integer number (6312312).

Almost surely, 2^23145133 is an apocalyptic number.

It is an amenable number.

23145133 is a deficient number, since it is larger than the sum of its proper divisors (2104115).

23145133 is a wasteful number, since it uses less digits than its factorization.

23145133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2104114.

The product of its digits is 1080, while the sum is 22.

The square root of 23145133 is about 4810.9388896555. The cubic root of 23145133 is about 284.9836165815.

Adding to 23145133 its reverse (33154132), we get a palindrome (56299265).

It can be divided in two parts, 2314 and 5133, that added together give a palindrome (7447).

The spelling of 23145133 in words is "twenty-three million, one hundred forty-five thousand, one hundred thirty-three".