243

243 is an odd composite number. It is composed of a single prime number multiplied by itself four times.

What does the number 243 look like?

This visualization shows the relationship between its 1 prime factors (large circles) and 6 divisors.

243 is an odd composite number. It is composed of one distinct prime number multiplied by itself four times. It has a total of six divisors.

Prime factorization of 243:

3⁵

(3 × 3 × 3 × 3 × 3)

See below for interesting mathematical facts about the number 243 from the Numbermatics database.

Names of 243

Cardinal: 243 can be written as Two hundred forty-three.

Scientific notation

Scientific notation: 2.43 × 10²

Factors of 243

Number of distinct prime factors ω(n): 1
Total number of prime factors Ω(n): 5
Sum of prime factors: 3

Divisors of 243

Number of divisors d(n): 6
Complete list of divisors:
1 3 9 27 81 243
Sum of all divisors σ(n): 364
Sum of proper divisors (its aliquot sum) s(n): 121
243 is a deficient number, because the sum of its proper divisors (121) is less than itself. Its deficiency is 122

Bases of 243

Binary: 11110011₂
Hexadecimal: 0xF3
Base-36: 6R

Squares and roots of 243

243 squared (243²) is 59049
243 cubed (243³) is 14348907
The square root of 243 is 15.5884572681
The cube root of 243 is 6.2402514691

Scales and comparisons

How big is 243?

243 seconds is equal to 4 minutes, 3 seconds.
To count from 1 to 243 would take you about two minutes.

This is a very rough estimate, based on a speaking rate of half a second every third order of magnitude. If you speak quickly, you could probably say any randomly-chosen number between one and a thousand in around half a second. Very big numbers obviously take longer to say, so we add half a second for every extra x1000. (We do not count involuntary pauses, bathroom breaks or the necessity of sleep in our calculation!)
A cube with a volume of 243 cubic inches would be around 0.5 feet tall.

Recreational maths with 243

243 backwards is 342
243 is a Harshad number.
The number of decimal digits it has is: 3
The sum of 243's digits is 9
More coming soon!

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The information we have on file for 243 includes mathematical data and numerical statistics calculated using standard algorithms and methods. We are adding more all the time. If there are any features you would like to see, please contact us. Information provided for educational use, intellectual curiosity and fun!

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