What is mdcccxxx1?

MDCCCXXXI is the Roman numeral representation for the year 1831. In this numeral, "M" stands for 1000, "D" for 500, "CCC" for 300, "XXX" for 30, and "I" for 1, adding up to a total of 1831. This year is notable for various historical events, including the beginning of the July Revolution in France.