13204223 has 4 divisors (see below), whose sum is σ = 13980960. Its totient is φ = 12427488.

The previous prime is 13204211. The next prime is 13204237. The reversal of 13204223 is 32240231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32240231 = 73 ⋅441647.

It is a cyclic number.

It is not a de Polignac number, because 13204223 - 2¹⁶ = 13138687 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17), and also a Moran number because the ratio is a prime number: 776719 = 13204223 / (1 + 3 + 2 + 0 + 4 + 2 + 2 + 3).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13204273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388343 + ... + 388376.

It is an arithmetic number, because the mean of its divisors is an integer number (3495240).

Almost surely, 2^13204223 is an apocalyptic number.

13204223 is a deficient number, since it is larger than the sum of its proper divisors (776737).

13204223 is an equidigital number, since it uses as much as digits as its factorization.

13204223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 776736.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 13204223 is about 3633.7615496892. The cubic root of 13204223 is about 236.3583503076.

Adding to 13204223 its reverse (32240231), we get a palindrome (45444454).

It can be divided in two parts, 13204 and 223, that multiplied together give a palindrome (2944492).

The spelling of 13204223 in words is "thirteen million, two hundred four thousand, two hundred twenty-three".