316

Number
$316$ (three hundred and sixteen) is:


 * $2^2 \times 79$


 * The $2$nd of the $3$rd ordered triple of consecutive integers after $\tuple {105, 106, 107}$ and $\tuple {165, 166, 167}$ that have Euler $\phi$ values which are strictly increasing:
 * $\map \phi {315} = 144$, $\map \phi {316} = 156$, $\map \phi {317} = 316$