Northern Mariana Islands is about 3,193 times smaller than Alaska.

Alaska is approximately 1,481,348 sq km, while Northern Mariana Islands is approximately 464 sq km, making Northern Mariana Islands 0.03% the size of Alaska. Meanwhile, the population of Alaska is ~710,231 people (658,756 fewer people live in Northern Mariana Islands).
Tip: This to-scale comparison of Alaska vs. Northern Mariana Islands uses the Mercator projection, which distorts the size of regions near the poles.