3203

3203 is a prime number.

Reversing the digits of 3203 also produces a prime (A109309).

3203 has the property that if each digit is replaced by its square, the resulting number is a square.

3203 is a prime whose digit sum is 8 (A062343).

3203 is the smallest prime whose decimal expansion begins with concatenation of the first two primes in descending order (A171154).

Source: What's Special About This Number