223420321 has 8 divisors (see below), whose sum is σ = 241174080. Its totient is φ = 206336592.

The previous prime is 223420291. The next prime is 223420333. The reversal of 223420321 is 123024322.

223420321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 223420321 - 2⁵ = 223420289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (223420621) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166815 + ... + 168148.

It is an arithmetic number, because the mean of its divisors is an integer number (30146760).

Almost surely, 2^223420321 is an apocalyptic number.

It is an amenable number.

223420321 is a deficient number, since it is larger than the sum of its proper divisors (17753759).

223420321 is a wasteful number, since it uses less digits than its factorization.

223420321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335015.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 223420321 is about 14947.2512857716. The cubic root of 223420321 is about 606.7934588200.

Adding to 223420321 its reverse (123024322), we get a palindrome (346444643).

The spelling of 223420321 in words is "two hundred twenty-three million, four hundred twenty thousand, three hundred twenty-one".