which of the following numbers are integers?8,1-1/2,0,-1,3.1

in·te·ger (nt-jr)

n. Mathematics
1. A member of the set of positive whole numbers {1, 2, 3, . . . }, negative whole numbers {-1, -2, -3, . . . }, and zero {0}.
2. A complete unit or entity.

You choose.