(defun headline-numbering-filter (data backend info)
  "No numbering in headlines that have a property :numbers: no"
  (let* ((beg (next-property-change 0 data))
         (headline (if beg (get-text-property beg :parent data))))
    (if (and (eq backend 'latex)
         (string= (org-element-property :NUMBERS headline) "no"))
        (with-temp-buffer
          (insert data)
          (beginning-of-buffer)
          (re-search-forward "\(part\|chapter\|\(?:sub\)*section\|\(?:sub\)?paragraph\)")
          (replace-match "\1*")
          (buffer-string))
      data)))
 
(setq org-export-filter-headline-functions '(headline-numbering-filter))
       
* Not-Numbered
:PROPERTIES:
:NUMBERS: no
:END:
       
(let* ((beg (next-property-change 0 data))
       (section (if beg (get-text-property beg :parent data))))