Kazakhstan is about 23 times bigger than North Korea.

North Korea is approximately 120,538 sq km, while Kazakhstan is approximately 2,724,900 sq km, making Kazakhstan 2,161% larger than North Korea. Meanwhile, the population of North Korea is ~26.0 million people (6.6 million fewer people live in Kazakhstan).
Tip: This to-scale comparison of North Korea vs. Kazakhstan uses the Mercator projection, which distorts the size of regions near the poles.