[Hallry]

See part C of rule R31, and the blue box beneath it:

C. be positioned around the ROBOT such that an observer walking around the perimeter of the ROBOT can unambiguously tell the Team’s number from any point of view.

There is no prohibition against splitting Team numbers onto different sections of BUMPER. The intent is that the Team’s number is clearly visible and unambiguous so that Judges, Referees, Announcers, and other Teams can easily identify competing ROBOTS.

Emphasis mine