223130321 has 8 divisors (see below), whose sum is σ = 244402920. Its totient is φ = 202763008.

The previous prime is 223130317. The next prime is 223130329. The reversal of 223130321 is 123031322.

223130321 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 24010000 + 199120321 = 4900^2 + 14111^2 .

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 223130321 - 2² = 223130317 is a prime.

It is a super-3 number, since 3×223130321³ (a number of 26 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (17).

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 223130321.

It is not an unprimeable number, because it can be changed into a prime (223130329) 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, 225806 + ... + 226791.

It is an arithmetic number, because the mean of its divisors is an integer number (30550365).

Almost surely, 2^223130321 is an apocalyptic number.

It is an amenable number.

223130321 is a deficient number, since it is larger than the sum of its proper divisors (21272599).

223130321 is a wasteful number, since it uses less digits than its factorization.

223130321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452643.

The product of its (nonzero) digits is 216, while the sum is 17.

The square root of 223130321 is about 14937.5473555735. The cubic root of 223130321 is about 606.5308054592.

Adding to 223130321 its reverse (123031322), we get a palindrome (346161643).

The spelling of 223130321 in words is "two hundred twenty-three million, one hundred thirty thousand, three hundred twenty-one".