363,474,363

Number
$363 \, 474 \, 363$ is:


 * $3 \times 7 \times 17 \, 308 \, 303$


 * The $2$nd of $2$ known palindromic integers which is the index of a palindromic triangular number:
 * $T_{363 \, 474 \, 363} = \dfrac {363 \, 474 \, 363 \times \left({363 \, 474 \, 363 + 1}\right)} 2 = 66 \, 056 \, 806 \, 460 \, 865 \, 066$