224443213 has 4 divisors (see below), whose sum is σ = 224579520. Its totient is φ = 224306908.

The previous prime is 224443201. The next prime is 224443253. The reversal of 224443213 is 312344422.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 224443213 - 2¹³ = 224435021 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 (224443253) 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, 65653 + ... + 68986.

It is an arithmetic number, because the mean of its divisors is an integer number (56144880).

Almost surely, 2^224443213 is an apocalyptic number.

It is an amenable number.

224443213 is a deficient number, since it is larger than the sum of its proper divisors (136307).

224443213 is a wasteful number, since it uses less digits than its factorization.

224443213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 136306.

The product of its digits is 4608, while the sum is 25.

The square root of 224443213 is about 14981.4289371875. The cubic root of 224443213 is about 607.7180827777.

Adding to 224443213 its reverse (312344422), we get a palindrome (536787635).

The spelling of 224443213 in words is "two hundred twenty-four million, four hundred forty-three thousand, two hundred thirteen".