MMCCXXXI in Roman numerals represents the number 2,231 in decimal (base 10) notation. Here’s the breakdown:

• MM represents 2000 in Roman numerals.
• CC represents 200 in Roman numerals.
• XXX represents 30 in Roman numerals.
• I represents 1 in Roman numerals.

Now, let’s add them together:

MM (2000) + CC (200) + XXX (30) + I (1) = 2000 + 200 + 30 + 1 = 2231

So, MMCCXXXI is equal to 2,231 in decimal notation.

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