223230209 has 2 divisors, whose sum is σ = 223230210. Its totient is φ = 223230208.

The previous prime is 223230191. The next prime is 223230229. The reversal of 223230209 is 902032322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 219040000 + 4190209 = 14800^2 + 2047^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-223230209 is a prime.

It is a super-3 number, since 3×223230209³ (a number of 26 digits) contains 333 as substring.

It is not a weakly prime, because it can be changed into another prime (223230229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111615104 + 111615105.

It is an arithmetic number, because the mean of its divisors is an integer number (111615105).

Almost surely, 2^223230209 is an apocalyptic number.

It is an amenable number.

223230209 is a deficient number, since it is larger than the sum of its proper divisors (1).

223230209 is an equidigital number, since it uses as much as digits as its factorization.

223230209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 23.

The square root of 223230209 is about 14940.8905022425. The cubic root of 223230209 is about 606.6212998251.

The spelling of 223230209 in words is "two hundred twenty-three million, two hundred thirty thousand, two hundred nine".