Fatto matematico: 2282 is the number of ways, up to rotation and reflection, of dissecting a regular 13-gon into 11 triangles.
Trivia: 2282 is an uninteresting number.
Data storica: March 31st is the day in 1854 that Commodore Matthew Perry signs the Treaty of Kanagawa with the Japanese government, opening the ports of Shimoda and Hakodate to American trade.