23118231 has 16 divisors (see below), whose sum is σ = 32601600. Its totient is φ = 14531328.

The previous prime is 23118217. The next prime is 23118233. The reversal of 23118231 is 13281132.

It is not a de Polignac number, because 23118231 - 2¹⁴ = 23101847 is a prime.

It is a super-2 number, since 2×23118231² = 1068905209138722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23118198 and 23118207.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23118233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12775 + ... + 14471.

It is an arithmetic number, because the mean of its divisors is an integer number (2037600).

Almost surely, 2^23118231 is an apocalyptic number.

23118231 is a deficient number, since it is larger than the sum of its proper divisors (9483369).

23118231 is a wasteful number, since it uses less digits than its factorization.

23118231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1958.

The product of its digits is 288, while the sum is 21.

The square root of 23118231 is about 4808.1421568003. The cubic root of 23118231 is about 284.8731599321.

Adding to 23118231 its reverse (13281132), we get a palindrome (36399363).

The spelling of 23118231 in words is "twenty-three million, one hundred eighteen thousand, two hundred thirty-one".