400
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Factors of 391: 1, 17, 23, and 391.Factors of 696: 1, 2, 3, 4, 6, 8, 12, 24, 29, 58, 87, 116, 174, 232, 348, and 696.The only whole number that goes into both 391 and 696 evenly is ' 1 ' .
The number 170 is even.
170% means 170/100 = 1.7 1.7 * 230 = 391
A prime number is a number with two and only two factors: 1 (also known as unity) and itself. A composite number is a number with more than two factors; in other words, it has at least one factor besides 1 and itself. 391 has factors other than 1 and itself, so it is not a prime number. For example, it is divisible by 17. Therefore, 391 is a composite number.
CCCXVI is 391 in English digits.Improved Answer:-In today's terms of expressing Roman numerals CCCXCI represents 391 but CCCXVI represents 316