393

Number
$393$ (three hundred and ninety-three) is:


 * $3 \times 131$


 * The $12$th palindromic lucky number:
 * $1$, $3$, $7$, $9$, $33$, $99$, $111$, $141$, $151$, $171$, $303$, $393$, $\ldots$