Adding to 2631 its reverse (1362), we get a palindrome (3993).
2631 is nontrivially palindromic in base 14.
2631 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
It is a semiprime because it is the product of two primes.
It is a D-number.
It is a Duffinian number.
2631 is an undulating number in base 14.
It is a nialpdrome in base 15.
It is a congruent number.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 2631.
2631 is an equidigital number, since it uses as much as digits as its factorization.
2631 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 880.
The square root of 2631 is about 51.2932744129. The cubic root of 2631 is about 13.8051230716.
The spelling of 2631 in words is "two thousand, six hundred thirty-one".