218 (number)

218 (two hundred [and] eighteen) is the natural number following 217 and preceding 219.

In mathematics

 * Mertens function (218) = 3, a record high.
 * 218 is nontotient and also noncototient.
 * 218 is the number of inequivalent ways to color the 12 edges of a cube using at most 2 colors, where two colorings are equivalent if they differ only by a rotation of the cube.
 * There are 218 nondegenerate Boolean functions of 3 variables.
 * The number of surface points on a 73 cube.

In other fields

 * 218 is the current number of votes in the US House of Representatives a party or coalition needs to win in order to achieve a majority.
 * The years 218 and 218 BC
 * Area code 218, for northern Minnesota.