237 is the smallest three-digit number with its digits being three distinct primes that is itself not prime and none of the permutations of its digits represents a prime number.
237 is the smallest number with the property that its first three multiples contain the digit 7: 237, 474, and 711.
Room 237 plays a significant role in the Stanley Kubrick film The Shining.
Source: Prime Curios!
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