The number 50831
50831 is a composite number with 4 divisors. Its prime factorisation is 11 × 4621. Divisors (4): 1, 11, 4621, 50831.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 50831: a semiprime: 11 × 4621, the product of two primes.
- 2
50831 is composite. Its prime factorisation is
- 3
The divisors add up to 55464; without 50831 itself that is 4633, so 50831 is deficient (4633 is less than 50831). Euler's totient φ(50831) = 46200 numbers up to 50831 share no factor with it.
- 4
The digits of 50831 add up to 17, and repeating that until one digit is left gives the digital root 8. The Collatz sequence (halve if even, else 3n+1) takes 57 steps to reach 1.
LaTeX source of the formulas on this page
\[ 50831 = 11 \times 4621 \]
50831 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 55464 |
| Euler totient φ(n) | 46200 |
| Square | 2583790561 |
| Cube | 131336658006191 |
| Square root | 225.457313 |
| Digit sum / digital root | 17 / 8 |
| Collatz steps to 1 | 57 |
| Scientific notation | 5.0831 × |
50831 in other forms
| Form | Value |
|---|---|
| In words | fifty thousand eight hundred and thirty-one |
| Binary (base 2) | 1100011010001111 |
| Octal (base 8) | 143217 |
| Hexadecimal (base 16) | C68F |
| Base 3 | 2120201122 |
| As time | 50831 seconds = 14 h 7 min 11 s |
Is 50831 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 2) | 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 5) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 4) | 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 7) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 8) | 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 | Yes (50831 ÷ 11 = 4621) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 11) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 50831 a prime number?
No. 50831 = 11 × 4621, so it is divisible by 11.
What are the factors of 50831?
1, 11, 4621, 50831.
What is 50831 in binary?
1100011010001111 (hexadecimal C68F, octal 143217).
What is the square root of 50831?
About 225.4573.
Is 50831 divisible by 3?
No. Its digits add up to 17, which is not a multiple of 3.
What is special about the number 50831?
50831 is a semiprime: 11 × 4621, the product of two primes.