Step 1: Divide the number into separate digits:
11317 => 1 1 3 1 7
Step 2: Calculate the distance between each digit and the next (the last digit with the first):
1 to 1 = 0
1 to 3 = 2
3 to 1 = 2
1 to 7 = 6
7 to 1 = 6
Step 3: Combine the filters to a string:
0 2 2 6 6 = 02266