23421231 has 10 divisors (see below), whose sum is σ = 34987392. Its totient is φ = 15614100.

The previous prime is 23421221. The next prime is 23421253. The reversal of 23421231 is 13212432.

It is not a de Polignac number, because 23421231 - 2¹⁰ = 23420207 is a prime.

It is a super-2 number, since 2×23421231² = 1097108123110722, which contains 22 as substring.

It is a plaindrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23421221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 144495 + ... + 144656.

Almost surely, 2^23421231 is an apocalyptic number.

23421231 is a deficient number, since it is larger than the sum of its proper divisors (11566161).

23421231 is an equidigital number, since it uses as much as digits as its factorization.

23421231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 289163 (or 289154 counting only the distinct ones).

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

The square root of 23421231 is about 4839.5486359784. The cubic root of 23421231 is about 286.1123289343.

Adding to 23421231 its reverse (13212432), we get a palindrome (36633663).

The spelling of 23421231 in words is "twenty-three million, four hundred twenty-one thousand, two hundred thirty-one".