13443223 has 4 divisors (see below), whose sum is σ = 13487320. Its totient is φ = 13399128.

The previous prime is 13443217. The next prime is 13443239. The reversal of 13443223 is 32234431.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 13443223 - 2⁵ = 13443191 is a prime.

It is the 3667-th Hogben number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 13443194 and 13443203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13443253) by changing a digit.

It is a nontrivial repunit in base 3666.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21588 + ... + 22201.

It is an arithmetic number, because the mean of its divisors is an integer number (3371830).

Almost surely, 2^13443223 is an apocalyptic number.

13443223 is a deficient number, since it is larger than the sum of its proper divisors (44097).

13443223 is an equidigital number, since it uses as much as digits as its factorization.

13443223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44096.

The product of its digits is 1728, while the sum is 22.

The square root of 13443223 is about 3666.5001022774. The cubic root of 13443223 is about 237.7758818102.

Adding to 13443223 its reverse (32234431), we get a palindrome (45677654).

The spelling of 13443223 in words is "thirteen million, four hundred forty-three thousand, two hundred twenty-three".