13224231 has 6 divisors (see below), whose sum is σ = 19101680. Its totient is φ = 8816148.

The previous prime is 13224227. The next prime is 13224269. The reversal of 13224231 is 13242231.

13224231 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 13224231 - 2² = 13224227 is a prime.

It is a super-2 number, since 2×13224231² = 349760571082722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13224221) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 734671 + ... + 734688.

Almost surely, 2^13224231 is an apocalyptic number.

13224231 is a deficient number, since it is larger than the sum of its proper divisors (5877449).

13224231 is a wasteful number, since it uses less digits than its factorization.

13224231 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1469365 (or 1469362 counting only the distinct ones).

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

The square root of 13224231 is about 3636.5135775905. The cubic root of 13224231 is about 236.4776725194.

Adding to 13224231 its reverse (13242231), we get a palindrome (26466462).

The spelling of 13224231 in words is "thirteen million, two hundred twenty-four thousand, two hundred thirty-one".