Search a number
alternating n.  and  nude n.

First numbers that belong to both sets:

1, 2, 3, 4, 5, 6, 7, 8, 9, 12, 36, 212, 216, 412, 432, 612, 636, 672, 816, 1212, 1236, 1296, 1412, 1416, 1632, 1692, 3216, 3276, 3432, 3492, 3612, 3636, 3816, 7476, 9216, 9432, 9612, 21212, 21216, 21412, 21432, 21492, 21612, 21636, 21672, 21816, 23232, 23292, 23412, 23436, 23616, 23832, 27216, 27272, 27412, 27636, 29232, 29412, 41212, 41232, 41272, 41292, 41412, 41436, 41616, 41832, 43212, 43236, 43416, 43632, 49212, 49896, 61212, 61236, 61416, 61632, 63216, 63432, 63612, 63636, 63672, 63816, 67872, 69696, 81216, 81432, 81816, 81872, 83232, 83616, 83832, 87472, 87696, 89496, 121212, 121236, 121412, 121416, 121632, 121896, 123216, 123432, 123612, 123636, 123696, 123816, 129276, 129492, 129636, 129816, 141212, 141216, 141412, 141432, 141612, 141636, 141696, 141816, 143232, 143412, 143436, 143472, 143496, 143616, 143832, 147672, 149292, 149436, 149616, 149832, 161232, 161412, 161436, 161496, 161616, 161832, 163212, 163236, 163296, 163416, 163632, 163692, 167412, 167832, 169236, 169416, 169632, 181272, 181296, 181416, 181632, 183216, 183432, 183816, 189216, 189432, 321216, 321432, 321612, 321636, 321696, 321816, 323232, 323412, 323436, 323496, 323616, 323832, 327432, 329292, 329436, 329616, 329832, 341232, 341412, 341436, 341496, 341616, 341832, 343212, 343236, 343296, 343416, 343476, 343632, 343692, 347676, 349236, 349272, 349416, 349632, 361212, 361236, 361296, 361416, 361632, 361692, 361872, 363216, 363432, 363492, 363612, 363636, 363816, 367416, 369216, 369432, 369612, 381216, 381432, 381816, 383232, 383616, 383832, 389232, 721476, 723492, 727272, 727412, 741216, 741272, 741412, 741636, 743232, 747432, 761292, 763476, 767676, 781872, 783216, 787416, 787472, 921492, 921636, 921816, 923292, 923436, 923616, 923832, 927612, 929232, 929412, 941292, 941436, 941472, 941616, 941832, 943236, 943416, 943632, 949212, 949896, 961236, 961416, 961632, 963216, 963432, 963612, 969696, 981216, 981432, 983232, 989496, 2121212, 2121216, 2121412, 2121432, 2121612, 2121636, 2121672, 2121696, 2121816, 2123232, 2123412, 2123436, 2123496, 2123616, 2123832, 2127216, 2127272.

Some larger examples :