23122431 has 24 divisors (see below), whose sum is σ = 35830080. Its totient is φ = 14317056.

The previous prime is 23122427. The next prime is 23122493. The reversal of 23122431 is 13422132.

23122431 is a `hidden beast` number, since 231 + 2 + 2 + 431 = 666.

It is not a de Polignac number, because 23122431 - 2² = 23122427 is a prime.

It is a super-2 number, since 2×23122431² = 1069293630699522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23122331) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11131 + ... + 13043.

It is an arithmetic number, because the mean of its divisors is an integer number (1492920).

Almost surely, 2^23122431 is an apocalyptic number.

23122431 is a deficient number, since it is larger than the sum of its proper divisors (12707649).

23122431 is a wasteful number, since it uses less digits than its factorization.

23122431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2015 (or 2012 counting only the distinct ones).

The product of its digits is 288, while the sum is 18.

The square root of 23122431 is about 4808.5788960981. The cubic root of 23122431 is about 284.8904103123.

Adding to 23122431 its reverse (13422132), we get a palindrome (36544563).

The spelling of 23122431 in words is "twenty-three million, one hundred twenty-two thousand, four hundred thirty-one".