30 = XXX
It's thirty thousands.
mxxxviiii Or: MXXXIX
MMCCXXXIX
I is one, V is five, X is ten, so XXX is thirty....
Thirty in Roman numerals is written as "XXX."
The number 31,000,000 in Roman numerals would be [XXXI] with a horizontal bar placed over it (which I can't write with my keyboard).
The way to write 33 is Thirty-three. You would write Thirty-three dollars. You could also write Thirty-three dollars and 00 cents.
Four Hundred and thirty eightor438
How do you write thirty-one million in numbers
at twelve thirty
XXX
How to write thirty one hundred thousand in number