Oh, dude, 1331 is not a Prime number. It's like the opposite of a prime number, you know? It's actually 11 raised to the power of 3, which makes it a perfect cube. So, yeah, it's not a prime number, but hey, at least it's special in its own nerdy math way.
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No. Any palindromic number of even length is divisible by 11.
{Edit}
Although it is not on any prime number chart, it is divisable by a number other than 1 and its self
1331 = 11 x 11 x 11
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A prime number times a prime number is a composite number. Since prime numbers, except for 2, are odd numbers, a prime number times a prime number is usually an odd number. It will only be an even number if one of the prime numbers is 2. A prime number times a prime number will be a number with four factors unless both prime numbers are the same, in which case it will be a square number with only three factors.
101 is a prime number. The only factor of 101 is itself and 1.prime
37 is an odd prime number