Hummer scored nine points during a 17-5 run for the Tigers (11-7, 4-0) at the end of the first half that produced a 29-17 halftime advantage.
Princeton, which shot 54.8 percent (23 of 42) and made 8 of 13 from 3-point range, never led by fewer than 12 in the second half.
Koon and T.J. Bray, who finished with 14 points, each made 6 of 7 shots for Princeton, and Hummer was 6 of 10.
Hummer now has 1,455 career points, good for fourth on Princeton's all-time list. He passed Craig Robinson, the brother-in-law of President Obama, who had been fifth, and Pete Campbell.
Rafael Maia scored 19 points for the Bears (8-11, 2-3), who shot 38 percent (19 of 50), including 1 of 12 on 3-pointers.
The second annual Gavitt Tipoff Games, eight games between members of the Big East and Big Ten to be played Nov. 14-18, will feature Villanova at Purdue in the opener.
Michael Lewis is leaving his assistant coaching job at Butler to take the same position at Nebraska under Tim Miles.
College basketball fans should be excited about next season's Jimmy V Classic, an event that will feature Duke's heralded freshman class.