InDesign adds automatically a space within a number

[Oraceomio]

In a text I neeed to write the number 1123. InDesign automatically writes 1 123, adding a space between the first two digits, no matter how often I delete the space. Presumeably it wants to separate the thousands from the hundreds. Is there a possibility to stop this automatism?

[Robert Tkaczyk]

It wasn't OP - but now it's gone from the Notification Feed 😞