What is the number of significant figures in the measured length \( 23080\text{ }\mu\text{m} \)?

The length \( 23080\text{ }\mu\text{m} \) can be written as \( 2.308 \times 10^4\text{ }\mu\text{m} \), where all non-zero digits and zeros between them are significant, resulting in 4 significant figures.