220344223 has 4 divisors (see below), whose sum is σ = 240375528. Its totient is φ = 200312920.

The previous prime is 220344217. The next prime is 220344239. The reversal of 220344223 is 322443022.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-220344223 is a prime.

It is a Smith number, since the sum of its digits (22) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 220344194 and 220344203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (220344203) 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, 10015636 + ... + 10015657.

It is an arithmetic number, because the mean of its divisors is an integer number (60093882).

Almost surely, 2^220344223 is an apocalyptic number.

220344223 is a deficient number, since it is larger than the sum of its proper divisors (20031305).

220344223 is a wasteful number, since it uses less digits than its factorization.

220344223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20031304.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 220344223 is about 14843.9961937478. The cubic root of 220344223 is about 603.9957594764.

Adding to 220344223 its reverse (322443022), we get a palindrome (542787245).

It can be divided in two parts, 220 and 344223, that added together give a palindrome (344443).

The spelling of 220344223 in words is "two hundred twenty million, three hundred forty-four thousand, two hundred twenty-three".