1224320223 has 24 divisors (see below), whose sum is σ = 1920302640. Its totient is φ = 691743360.

The previous prime is 1224320219. The next prime is 1224320257. The reversal of 1224320223 is 3220234221.

It is not a de Polignac number, because 1224320223 - 2² = 1224320219 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a self number, because there is not a number n which added to its sum of digits gives 1224320223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1224320213) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 33708 + ... + 59873.

It is an arithmetic number, because the mean of its divisors is an integer number (80012610).

Almost surely, 2^1224320223 is an apocalyptic number.

1224320223 is a deficient number, since it is larger than the sum of its proper divisors (695982417).

1224320223 is an equidigital number, since it uses as much as digits as its factorization.

1224320223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93687 (or 93680 counting only the distinct ones).

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

The square root of 1224320223 is about 34990.2875524052. The cubic root of 1224320223 is about 1069.7895247931.

Adding to 1224320223 its reverse (3220234221), we get a palindrome (4444554444).

The spelling of 1224320223 in words is "one billion, two hundred twenty-four million, three hundred twenty thousand, two hundred twenty-three".