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Numbers / 243

The Number 243

243 is composite: factorization 3^5. That gives 243 exactly 6 divisors: 1, 3, 9, 27, 81, 243. 243's proper divisors total just 121, 122 short of 243, the deficient case most of 243's neighbors share too. 243 has a digit sum of 9; for 243, the digital root works out to 9. 243: 3, 9 all divide 243 evenly, out of 2-12. 243 is 11110011 in binary and F3 in hex; as a Roman numeral it's CCXLIII.

Factors
1, 3, 9, 27, 81, 243
Number of factors
6
Prime?
No
Prime factorization
3^5
Even or odd
Odd
Square
59049
Cube
14348907
Binary
11110011
Hexadecimal
F3
Roman numeral
CCXLIII
Perfect square?
No
Perfect cube?
No
Perfect number?
No
Triangular number?
No
Fibonacci number?
No
Factors of 243 in detail →Is 243 prime? →