Q: What is the negative version of the number 31,511,209?
A: -31,511,209
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:
| 31,511,207 | 31,511,208 | 31,511,210 | 31,511,211 |
| -31,511,207 | -31,511,208 | -31,511,210 | -31,511,211 |