231 (CCXXXI) ebile ngwaga wa go thoma ka Mokibelo, ngwaga wa bobedi ngwagengsome wa 230s, ngwaga wa bomasometharo tee ngwagengkgolo wa Ngwagakgolo 3, le ngwaga wa bomakgolo pedi masometharo tee ngwagengkete wa Ngwagakete 1.