223220345 has 8 divisors (see below), whose sum is σ = 268315200. Its totient is φ = 178275760.

The previous prime is 223220323. The next prime is 223220381. The reversal of 223220345 is 543022322.

223220345 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 not a de Polignac number, because 223220345 - 2⁶ = 223220281 is a prime.

It is a super-3 number, since 3×223220345³ (a number of 26 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 223220345.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34271 + ... + 40260.

It is an arithmetic number, because the mean of its divisors is an integer number (33539400).

Almost surely, 2^223220345 is an apocalyptic number.

It is an amenable number.

223220345 is a deficient number, since it is larger than the sum of its proper divisors (45094855).

223220345 is an equidigital number, since it uses as much as digits as its factorization.

223220345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75135.

The product of its (nonzero) digits is 2880, while the sum is 23.

The square root of 223220345 is about 14940.5603977896. The cubic root of 223220345 is about 606.6123646535.

Adding to 223220345 its reverse (543022322), we get a palindrome (766242667).

The spelling of 223220345 in words is "two hundred twenty-three million, two hundred twenty thousand, three hundred forty-five".