331 million = 0.331 billion. 331 million is 331,000,000 in digits, written 33,10,00,000 in the Indian system.
How to convert million to billion
billion = million × 0.001
- 1 million = 0.001 billion (and 1 billion = 1,000 million).
- Multiply the amount by the factor: 331 × 0.001 = 0.331.
- Answer: 331 million = 0.331 billion.
Shortcut: dividing by 1,000 gives the same result as multiplying by 0.001.
Indian and international place values
| Indian | Digits (Indian) | International |
|---|---|---|
| 1 lakh | 1,00,000 | 100 thousand |
| 10 lakh | 10,00,000 | 1 million |
| 1 crore | 1,00,00,000 | 10 million |
| 10 crore | 10,00,00,000 | 100 million |
| 100 crore (1 arab) | 1,00,00,00,000 | 1 billion |
| 1 lakh crore | 1,00,00,00,00,000 | 1 trillion |
Million to Billion table
| Million (million) | Billion (billion) |
|---|---|
| 326 million | 0.326 billion |
| 327 million | 0.327 billion |
| 328 million | 0.328 billion |
| 329 million | 0.329 billion |
| 330 million | 0.33 billion |
| 331 million | 0.331 billion |
| 332 million | 0.332 billion |
| 333 million | 0.333 billion |
| 334 million | 0.334 billion |
| 335 million | 0.335 billion |
| 336 million | 0.336 billion |
| million | billion |
|---|---|
| 1 million | 0.001 billion |
| 2 million | 0.002 billion |
| 5 million | 0.005 billion |
| 10 million | 0.01 billion |
| 50 million | 0.05 billion |
| 100 million | 0.1 billion |
Good to know
1 lakh = 100,000 (1,00,000) and 1 crore = 10 million (1,00,00,000).
1 million = 10 lakh, 1 billion = 100 crore, 1 trillion = 1 lakh crore.
The Indian system groups digits in twos after the first three (15,00,00,000); the international system groups in threes (150,000,000).