1035

Number
$1035$ (one thousand and thirty-five) is:


 * $3^2 \times 5 \times 23$


 * The $23$rd hexagonal number after $1, 6, 15, 28, 45, 66, 91, \ldots, 703, 780, 861, 946$:
 * $1035 = \displaystyle \sum_{k \mathop = 1}^{23} \left({4 k - 3}\right) = 23 \left({2 \times 23 - 1}\right)$