224513213 has 4 divisors (see below), whose sum is σ = 224734560.
Its totient is φ = 224291868.
The previous prime is 224513207. The next prime is 224513243. The reversal of 224513213 is 312315422.
Adding to 224513213 its reverse (312315422), we get a palindrome (536828635).
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 224513213 - 226 = 157404349 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 (224513243) 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, 109145 + ... + 111182.
It is an arithmetic number, because the mean of its divisors is an integer number (56183640).
Almost surely, 2224513213 is an apocalyptic number.
It is an amenable number.
224513213 is a deficient number, since it is larger than the sum of its proper divisors (221347).
224513213 is a wasteful number, since it uses less digits than its factorization.
224513213 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 221346.
The product of its digits is 1440, while the sum is 23.
The square root of 224513213 is about 14983.7649808051.
The cubic root of 224513213 is about 607.7812551699.
The spelling of 224513213 in words is "two hundred twenty-four million, five hundred thirteen thousand, two hundred thirteen".