REMOVE the 13/ and have your query use the remainder to search for the {title?} rather than the {id} of the record. I’ve done that for http://wilderness-wally.com and it works a treat (but I use _'s rather than -'s to replace spaces BECAUSE a hyphen is more likely to be in a title).
Of course, you can use a RewriteMap to do the same thing but (a) that REQUIRES access to the httpd.conf and (b) doesn’t do it any faster. You can also simulate a RewriteMap by redirecting to a script to parse the URI for you.
WW’s site uses a single script for all those “stories” he has online so, unless the URI is a directory or a file, it’s redirected to the script where the title has its spaces restored so it can query the db for the correct story. Easy-peasy!