Adding to 3131003 its reverse (3001313), we get a palindrome (6132316).
It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 3001313 = 7 ⋅428759.
It is a cyclic number.
It is a Duffinian number.
Almost surely, 23131003 is an apocalyptic number.
3131003 is a wasteful number, since it uses less digits than its factorization.
3131003 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 3564.
The square root of 3131003 is about 1769.4640431498. The cubic root of 3131003 is about 146.2944423827.
The spelling of 3131003 in words is "three million, one hundred thirty-one thousand, three".