381 is an odd composite number. It is composed of two distinct prime numbers multiplied together. It has a total of four divisors.
Prime factorization of 381:
3 × 127
See below for interesting mathematical facts about the number 381 from the Numbermatics database.
Names of 381
- Cardinal: 381 can be written as Three hundred eighty-one.
- Scientific notation: 3.81 × 102
Factors of 381
Divisors of 381
Bases of 381
- Binary: 1011111012
- Hexadecimal: 0x17D
- Base-36: AL
Squares and roots of 381
Scales and comparisonsHow big is 381?
- 381 seconds is equal to 6 minutes, 21 seconds.
To count from 1 to 381 would take you about three 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 381 cubic inches would be around 0.6 feet tall.
Recreational maths with 381
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"Number 381 - Facts about the integer". Numbermatics.com. 2022. Web. 7 December 2022.
Numbermatics. (2022). Number 381 - Facts about the integer. Retrieved 7 December 2022, from https://numbermatics.com/n/381/
Numbermatics. 2022. "Number 381 - Facts about the integer". https://numbermatics.com/n/381/
The information we have on file for 381 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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