soy medio idiota

no hace falta ni resaltarle la sintaxis

is_palindrome(Number) ->
  String = integer_to_list(Number),
  String == lists:reverse(String).

(defun is-palindrome (num)
    (setf str (format nil "~a" num))
    (equal str (reverse str)))

def is_palindromic(number):
    '''return True if the number is a palindrome'''
    number = str(number)
    return number == number[::-1]

ganas de complicarse...