The number 30973
30973 is a composite number with 4 divisors. Its prime factorisation is 47 × 659. Divisors (4): 1, 47, 659, 30973.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
What is special about 30973: a semiprime: 47 × 659, the product of two primes.
- 2
30973 is composite. Its prime factorisation is
- 3
The divisors add up to 31680; without 30973 itself that is 707, so 30973 is deficient (707 is less than 30973). Euler's totient φ(30973) = 30268 numbers up to 30973 share no factor with it.
- 4
The digits of 30973 add up to 22, and repeating that until one digit is left gives the digital root 4. The Collatz sequence (halve if even, else 3n+1) takes 116 steps to reach 1.
LaTeX source of the formulas on this page
\[ 30973 = 47 \times 659 \]
30973 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 4 |
| Sum of divisors | 31680 |
| Euler totient φ(n) | 30268 |
| Square | 959326729 |
| Cube | 29713226777317 |
| Square root | 175.991477 |
| Digit sum / digital root | 22 / 4 |
| Collatz steps to 1 | 116 |
| Scientific notation | 3.0973 × |
30973 in other forms
| Form | Value |
|---|---|
| In words | thirty thousand nine hundred and seventy-three |
| Binary (base 2) | 111100011111101 |
| Octal (base 8) | 74375 |
| Hexadecimal (base 16) | 78FD |
| Base 3 | 1120111011 |
| As time | 30973 seconds = 8 h 36 min 13 s |
Is 30973 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 1) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 3) | 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 5) | 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 5) | 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 3) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 8) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 1) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 30973 a prime number?
No. 30973 = 47 × 659, so it is divisible by 47.
What are the factors of 30973?
1, 47, 659, 30973.
What is 30973 in binary?
111100011111101 (hexadecimal 78FD, octal 74375).
What is the square root of 30973?
About 175.9915.
Is 30973 divisible by 3?
No. Its digits add up to 22, which is not a multiple of 3.
What is special about the number 30973?
30973 is a semiprime: 47 × 659, the product of two primes.