23011131 has 16 divisors (see below), whose sum is σ = 36046080. Its totient is φ = 12873120.

The previous prime is 23011129. The next prime is 23011139. The reversal of 23011131 is 13111032.

It is not a de Polignac number, because 23011131 - 2¹ = 23011129 is a prime.

It is a super-2 number, since 2×23011131² = 1059024299798322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (23011139) 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 15 ways as a sum of consecutive naturals, for example, 26391 + ... + 27248.

It is an arithmetic number, because the mean of its divisors is an integer number (2252880).

Almost surely, 2^23011131 is an apocalyptic number.

23011131 is a deficient number, since it is larger than the sum of its proper divisors (13034949).

23011131 is a wasteful number, since it uses less digits than its factorization.

23011131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53666.

The product of its (nonzero) digits is 18, while the sum is 12.

The square root of 23011131 is about 4796.9918699118. The cubic root of 23011131 is about 284.4325675187.

Adding to 23011131 its reverse (13111032), we get a palindrome (36122163).

Subtracting from 23011131 its reverse (13111032), we obtain a palindrome (9900099).

The spelling of 23011131 in words is "twenty-three million, eleven thousand, one hundred thirty-one".