藩 is built from the 艹 (grass (top)), 氵 (water (left)), and 番 components.
It reads ハン like 番, as do 翻 — learn 番 once and the family's reading comes with it.
A common word using 藩 is 旧藩 (きゅうはん), meaning “former (feudal) domain; former fief”.
Kanji that look similar include 穫, 藍, 藤, and 藻.