The number 23

Its correspondent in each prime base is prime except 19, where it is 77, a palindrome.
In base 3 it is a palindrome (212) so it remains 23.

Base	23	Reverse	Is
2	10111	11101	29
3	212	212	23
5	43	34	19
7	32	23	17
11	21	12	13
13	1A	A1	131
17	16	61	103
19	14	41	77