223217 has 2 divisors, whose sum is σ = 223218. Its totient is φ = 223216.

The previous prime is 223211. The next prime is 223219. The reversal of 223217 is 712322.

223217 is nontrivially palindromic in base 13.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 215296 + 7921 = 464^2 + 89^2 .

It is a cyclic number.

It is not a de Polignac number, because 223217 - 2¹⁰ = 222193 is a prime.

It is a super-3 number, since 3×223217³ = 33365916275277939, which contains 333 as substring.

Together with 223219, it forms a pair of twin primes.

It is a Chen prime.

223217 is an undulating number in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 223195 and 223204.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 223217.

It is not a weakly prime, because it can be changed into another prime (223211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111608 + 111609.

It is an arithmetic number, because the mean of its divisors is an integer number (111609).

2²²³²¹⁷ is an apocalyptic number.

It is an amenable number.

223217 is a deficient number, since it is larger than the sum of its proper divisors (1).

223217 is an equidigital number, since it uses as much as digits as its factorization.

223217 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 223217 is about 472.4584637828. The cubic root of 223217 is about 60.6609334571.

Adding to 223217 its reverse (712322), we get a palindrome (935539).

The spelling of 223217 in words is "two hundred twenty-three thousand, two hundred seventeen", and thus it is an iban number.