224513321 has 4 divisors (see below), whose sum is σ = 224575872. Its totient is φ = 224450772.

The previous prime is 224513279. The next prime is 224513347. The reversal of 224513321 is 123315422.

224513321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 224513321 - 2¹⁰ = 224512297 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (224515321) 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, 25541 + ... + 33186.

It is an arithmetic number, because the mean of its divisors is an integer number (56143968).

Almost surely, 2^224513321 is an apocalyptic number.

It is an amenable number.

224513321 is a deficient number, since it is larger than the sum of its proper divisors (62551).

224513321 is an equidigital number, since it uses as much as digits as its factorization.

224513321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62550.

The product of its digits is 1440, while the sum is 23.

The square root of 224513321 is about 14983.7685847053. The cubic root of 224513321 is about 607.7813526257.

Adding to 224513321 its reverse (123315422), we get a palindrome (347828743).

The spelling of 224513321 in words is "two hundred twenty-four million, five hundred thirteen thousand, three hundred twenty-one".