13424223 has 4 divisors (see below), whose sum is σ = 17898968. Its totient is φ = 8949480.

The previous prime is 13424221. The next prime is 13424231. The reversal of 13424223 is 32242431.

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

It is not a de Polignac number, because 13424223 - 2¹ = 13424221 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 13424223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13424221) 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, 2237368 + ... + 2237373.

It is an arithmetic number, because the mean of its divisors is an integer number (4474742).

Almost surely, 2^13424223 is an apocalyptic number.

13424223 is a deficient number, since it is larger than the sum of its proper divisors (4474745).

13424223 is an equidigital number, since it uses as much as digits as its factorization.

13424223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4474744.

The product of its digits is 1152, while the sum is 21.

The square root of 13424223 is about 3663.9081593293. The cubic root of 13424223 is about 237.6638086907.

Adding to 13424223 its reverse (32242431), we get a palindrome (45666654).

It can be divided in two parts, 1342 and 4223, that added together give a triangular number (5565 = T₁₀₅).

The spelling of 13424223 in words is "thirteen million, four hundred twenty-four thousand, two hundred twenty-three".