13223443 has 4 divisors (see below), whose sum is σ = 13546008. Its totient is φ = 12900880.

The previous prime is 13223437. The next prime is 13223461. The reversal of 13223443 is 34432231.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-13223443 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13223423) by changing a digit.

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, 161221 + ... + 161302.

It is an arithmetic number, because the mean of its divisors is an integer number (3386502).

Almost surely, 2^13223443 is an apocalyptic number.

13223443 is a deficient number, since it is larger than the sum of its proper divisors (322565).

13223443 is an equidigital number, since it uses as much as digits as its factorization.

13223443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322564.

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

The square root of 13223443 is about 3636.4052304439. The cubic root of 13223443 is about 236.4729753815.

Adding to 13223443 its reverse (34432231), we get a palindrome (47655674).

The spelling of 13223443 in words is "thirteen million, two hundred twenty-three thousand, four hundred forty-three".