The number 80131
80131 is a composite number with 4 divisors. Its prime factorisation is 227 × 353. Divisors (4): 1, 227, 353, 80131.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 80131: a semiprime: 227 × 353, the product of two primes.
- 2
80131 is composite. Its prime factorisation is
- 3
The divisors add up to 80712; without 80131 itself that is 581, so 80131 is deficient (581 is less than 80131). Euler's totient φ(80131) = 79552 numbers up to 80131 share no factor with it.
- 4
The digits of 80131 add up to 13, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 213 steps to reach 1.
LaTeX source of the formulas on this page
\[ 80131 = 227 \times 353 \]
80131 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 80712 |
| Euler totient φ(n) | 79552 |
| Square | 6420977161 |
| Cube | 514519320888091 |
| Square root | 283.074195 |
| Digit sum / digital root | 13 / 4 |
| Collatz steps to 1 | 213 |
| Scientific notation | 8.0131 × |
80131 in other forms
| Form | Value |
|---|---|
| In words | eighty thousand one hundred and thirty-one |
| Binary (base 2) | 10011100100000011 |
| Octal (base 8) | 234403 |
| Hexadecimal (base 16) | 13903 |
| Base 3 | 11001220211 |
| As time | 80131 seconds = 22 h 15 min 31 s |
Is 80131 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | No (remainder 1) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | No (remainder 1) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 3) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 1) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | No (remainder 1) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 2) | A number is divisible by 7 if double the last digit and subtract it from the rest: the result is a multiple of 7. |
| 8 | No (remainder 3) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 4) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 1) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 7) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 7) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 80131 a prime number?
No. 80131 = 227 × 353, so it is divisible by 227.
What are the factors of 80131?
1, 227, 353, 80131.
What is 80131 in binary?
10011100100000011 (hexadecimal 13903, octal 234403).
What is the square root of 80131?
About 283.0742.
Is 80131 divisible by 3?
No. Its digits add up to 13, which is not a multiple of 3.
What is special about the number 80131?
80131 is a semiprime: 227 × 353, the product of two primes.