224213403 has 4 divisors (see below), whose sum is σ = 298951208. Its totient is φ = 149475600.

The previous prime is 224213401. The next prime is 224213411. The reversal of 224213403 is 304312422.

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

It is not a de Polignac number, because 224213403 - 2¹ = 224213401 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 224213403.

It is not an unprimeable number, because it can be changed into a prime (224213401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37368898 + ... + 37368903.

It is an arithmetic number, because the mean of its divisors is an integer number (74737802).

Almost surely, 2^224213403 is an apocalyptic number.

224213403 is a deficient number, since it is larger than the sum of its proper divisors (74737805).

224213403 is an equidigital number, since it uses as much as digits as its factorization.

224213403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74737804.

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

The square root of 224213403 is about 14973.7571437499. The cubic root of 224213403 is about 607.5105954222.

Adding to 224213403 its reverse (304312422), we get a palindrome (528525825).

The spelling of 224213403 in words is "two hundred twenty-four million, two hundred thirteen thousand, four hundred three".