23133131 has 8 divisors (see below), whose sum is σ = 26468064. Its totient is φ = 19805760.

The previous prime is 23133109. The next prime is 23133139. The reversal of 23133131 is 13133132.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23133131 - 2¹⁸ = 22870987 is a prime.

It is a super-2 number, since 2×23133131² = 1070283499726322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23133139) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8471 + ... + 10863.

It is an arithmetic number, because the mean of its divisors is an integer number (3308508).

Almost surely, 2^23133131 is an apocalyptic number.

23133131 is a deficient number, since it is larger than the sum of its proper divisors (3334933).

23133131 is a wasteful number, since it uses less digits than its factorization.

23133131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3781.

The product of its digits is 162, while the sum is 17.

The square root of 23133131 is about 4809.6913622394. The cubic root of 23133131 is about 284.9343482717.

Adding to 23133131 its reverse (13133132), we get a palindrome (36266263).

Subtracting from 23133131 its reverse (13133132), we obtain a palindrome (9999999).

The spelling of 23133131 in words is "twenty-three million, one hundred thirty-three thousand, one hundred thirty-one".