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congruent n.  and  katadrome

First numbers that belong to both sets:

5, 6, 7, 20, 21, 30, 31, 41, 52, 53, 54, 60, 61, 62, 63, 65, 70, 71, 80, 84, 85, 86, 87, 92, 93, 94, 95, 96, 210, 310, 320, 410, 421, 430, 431, 510, 532, 540, 541, 542, 543, 621, 630, 631, 632, 651, 653, 654, 710, 720, 721, 731, 732, 741, 742, 743, 750, 751, 752, 760, 761, 764, 765, 820, 821, 830, 831, 832, 840, 850, 852, 853, 854, 860, 861, 862, 863, 864, 870, 871, 876, 910, 920, 941, 942, 943, 950, 951, 952, 960, 965, 973, 974, 975, 976, 980, 981, 982, 983, 984, 985, 987, 4310, 4320, 5310, 5320, 5421, 5430, 5431, 5432, 6310, 6320, 6420, 6421, 6430, 6431, 6510, 6520, 6531, 6532, 6540, 6541, 6542, 6543, 7210, 7310, 7320, 7321, 7410, 7420, 7421, 7430, 7431, 7432, 7510, 7520, 7540, 7541, 7542, 7543, 7621, 7630, 7631, 7632, 7640, 7650, 7653, 7654, 8310, 8421, 8430, 8431, 8432, 8510, 8520, 8521, 8532, 8540, 8541, 8542, 8543, 8621, 8630, 8631, 8632, 8640, 8653, 8654, 8710, 8732, 8741, 8742, 8743, 8750, 8751, 8760, 8762, 8764, 8765, 9310, 9421, 9430, 9431, 9432, 9510, 9521, 9532, 9540, 9541, 9542, 9543, 9620, 9621, 9630, 9631, 9632, 9641, 9642, 9650, 9652, 9653, 9654, 9710, 9720, 9730, 9731, 9741, 9742, 9743, 9750, 9751, 9752, 9765, 9820, 9821, 9830, 9831, 9840, 9841, 9852, 9853, 9854, 9860, 9861, 9862, 9863, 9870, 9871, 9875, 9876, 54210, 54310, 64310, 64320, 65310, 65410, 65421, 65430, 65431, 65432, 74310, 74320, 75210, 75310, 75320, 75420, 75421, 75430, 75431, 76310, 76421, 76430, 76431, 76510, 76532, 76540, 76541, 76542, 76543, 84310, 84320, 85210, 85310, 85321, 85410, 85421, 85430, 85431, 85432, 86310, 86410, 86420, 86421, 86430, 86431, 86510, 86520, 86541, 86542, 86543.

Some larger examples :