WordPress URL Redircting

Hi,
My website is https://www.iraqinews.com

When select posts in particular category the url is like this
https://www.iraqinews.com/features/harb-constitution-not-to-allow-kr-provinces-to-receive-foreign-officials

it is working fine but if we some numbers after URL.

https://www.iraqinews.com/features/harb-constitution-not-to-allow-kr-provinces-to-receive-foreign-officials/1231212121435435435

It also works. I want to disable the numbers after URL. How can i redirect it into error page.

Thanks,
Madanagopal.