At least one of them is, so the answer to the question is yes.
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31 is a prime number, but 24 and 35 are not.
It is 35 because it has more than 2 factors
35 is a composite number.
These are the composites between 31 and 41: 32, 33, 34, 35, 36, 38, 39, 40.
24 is divisible by 2 and 35 is divisible by 5. 31 has only two factors: 1 and itself. 31 is the prime number.