13231223 has 4 divisors (see below), whose sum is σ = 13247520. Its totient is φ = 13214928.

The previous prime is 13231189. The next prime is 13231247. The reversal of 13231223 is 32213231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32213231 = 1481 ⋅21751.

It is a cyclic number.

It is not a de Polignac number, because 13231223 - 2⁶ = 13231159 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13231123) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6863 + ... + 8576.

It is an arithmetic number, because the mean of its divisors is an integer number (3311880).

Almost surely, 2^13231223 is an apocalyptic number.

13231223 is a deficient number, since it is larger than the sum of its proper divisors (16297).

13231223 is an equidigital number, since it uses as much as digits as its factorization.

13231223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16296.

The product of its digits is 216, while the sum is 17.

The square root of 13231223 is about 3637.4748109093. The cubic root of 13231223 is about 236.5193425054.

Adding to 13231223 its reverse (32213231), we get a palindrome (45444454).

The spelling of 13231223 in words is "thirteen million, two hundred thirty-one thousand, two hundred twenty-three".