224204213 has 4 divisors (see below), whose sum is σ = 224251020. Its totient is φ = 224157408.

The previous prime is 224204179. The next prime is 224204287. The reversal of 224204213 is 312402422.

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

It can be written as a sum of positive squares in 2 ways, for example, as 80156209 + 144048004 = 8953^2 + 12002^2 .

It is a cyclic number.

It is not a de Polignac number, because 224204213 - 2¹² = 224200117 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 (224204293) 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, 15278 + ... + 26111.

It is an arithmetic number, because the mean of its divisors is an integer number (56062755).

Almost surely, 2^224204213 is an apocalyptic number.

It is an amenable number.

224204213 is a deficient number, since it is larger than the sum of its proper divisors (46807).

224204213 is an equidigital number, since it uses as much as digits as its factorization.

224204213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46806.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 224204213 is about 14973.4502703953. The cubic root of 224204213 is about 607.5022951473.

Adding to 224204213 its reverse (312402422), we get a palindrome (536606635).

The spelling of 224204213 in words is "two hundred twenty-four million, two hundred four thousand, two hundred thirteen".