217223 has 2 divisors, whose sum is σ = 217224. Its totient is φ = 217222.

The previous prime is 217219. The next prime is 217229. The reversal of 217223 is 322712.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 217223 - 2² = 217219 is a prime.

It is a plaindrome in base 15.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (217229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 108611 + 108612.

It is an arithmetic number, because the mean of its divisors is an integer number (108612).

2²¹⁷²²³ is an apocalyptic number.

217223 is a deficient number, since it is larger than the sum of its proper divisors (1).

217223 is an equidigital number, since it uses as much as digits as its factorization.

217223 is an evil number, because the sum of its binary digits is even.

The product of its digits is 168, while the sum is 17.

The square root of 217223 is about 466.0718828679. The cubic root of 217223 is about 60.1130276861.

Adding to 217223 its reverse (322712), we get a palindrome (539935).

The spelling of 217223 in words is "two hundred seventeen thousand, two hundred twenty-three", and thus it is an iban number.