23611231 has 8 divisors (see below), whose sum is σ = 27067040. Its totient is φ = 20176128.

The previous prime is 23611219. The next prime is 23611261. The reversal of 23611231 is 13211632.

23611231 is nontrivially palindromic in base 12.

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

It is not a de Polignac number, because 23611231 - 2¹³ = 23603039 is a prime.

It is a super-2 number, since 2×23611231² = 1114980458670722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 23611199 and 23611208.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23611201) 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, 2646 + ... + 7363.

It is an arithmetic number, because the mean of its divisors is an integer number (3383380).

Almost surely, 2^23611231 is an apocalyptic number.

23611231 is a deficient number, since it is larger than the sum of its proper divisors (3455809).

23611231 is a wasteful number, since it uses less digits than its factorization.

23611231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10353.

The product of its digits is 216, while the sum is 19.

The square root of 23611231 is about 4859.1389154870. The cubic root of 23611231 is about 286.8839223512.

Adding to 23611231 its reverse (13211632), we get a palindrome (36822863).

The spelling of 23611231 in words is "twenty-three million, six hundred eleven thousand, two hundred thirty-one".