316 (three hundred [and] sixteen) is the natural number following 315 and preceding 317. The factors of 316 are 1, 2, 4, 79, 158 and 316. This can be represented in the form 2ò à79. 316 is a centered triangular number and a centered heptagonal number.
316 is also an Ulam number and a member of one Tetranacci sequence. It appears in counting asymmetric polyominoes and binary-matrix involutions.