The invention relates to an electrophotographic photosensitive member, a process cartridge and an electrophotographic apparatus. The electrophotographic photosensitive member is disclosed, wherein fluctuation in potential is suppressed, and the occurrence of black spots is suppressed even if the electrophotographic photosensitive member is repeatedly used for a long period of time. The process cartridge that is equipped with the electrophotographic photosensitive member and an electrophotographic apparatus that is equipped with the process cartridge are provided. The electrophotographic photosensitive member is disclosed, wherein an undercoat layer of the electrophotographic photosensitive member contains an aluminum oxide particle that is surface-treated in a specific amount using a specific compound.