The square root of 961 is 31.
961 is nontrivially palindromic in base 5.
961 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.
961 is an esthetic number in base 5, because in such base its adjacent digits differ by 1.
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: 169 = 132.
It is an alternating number because its digits alternate between odd and even.
It is a Duffinian number.
961 is a lucky number.
It is a plaindrome in base 9 and base 13.
It is a nialpdrome in base 10 and base 15.
961 is the 31-st square number.
961 is the 16-th centered octagonal number.
It is an amenable number.
961 is an equidigital number, since it uses as much as digits as its factorization.
961 is an odious number, because the sum of its binary digits is odd.
The cubic root of 961 is about 9.8682724032.
Multiplying 961 by its sum of digits (16), we get a square (15376 = 1242).
Multiplying 961 by its reverse (169), we get a square (162409 = 4032).
The spelling of 961 in words is "nine hundred sixty-one", and thus it is an aban number.