Q: What is the negative version of the number 31,191,909?
A: -31,191,909
Negative numbers are usually written with - in front of them. They represent a number that is less than zero.
Here are more examples of negative numbers in sequence:
| 31,191,907 | 31,191,908 | 31,191,910 | 31,191,911 |
| -31,191,907 | -31,191,908 | -31,191,910 | -31,191,911 |