A portable electronic apparatus includes a housing and an output device configured to output sound. The output device is disposed on a surface on an inside of a slope disposed on a lower surface of the housing, the slope resulting in the housing being opened in a predetermined direction. The slope forms a space between the slope and a mounting surface on which the housing is placed. The surface on the inside of the slope includes a curved surface. The curved surface may be concavely curved relative to the bottom surface of the housing. The electronic apparatus may also include an input device, and the output device may be disposed on a side forward of the input device.