Given a number determine if it is a circular prime.
A circular prime is a prime where if you rotate the digits you still get prime numbers. 1193 is circular prime because 1931 and 9311 and 3119 are all primes.
Input: Output: 1193 circular 11939 circular 1456 nothing 193939 circular 1111111 nothing 7 circular 23 nothing
Shortest code wins.