What is the regex to match a digit character from any language?

Question

Given an input that contains non-Latin "digit" characters, i.e. not one of 0-9, such as

String input = "3\u0e53\u0969"; // i.e. "3๓३"

which is made up of the characters:

• 3
• ๓ the Thai character for 3
• ३ an Indian dialect character for 3

what regex matches this, requiring that all the characters be "digits"?

ie, what must regex be in the following snippet for matches() to return true?

"3๓३".matches(regex)