961

961 is a natural number that comes after 960 and before 962. In mathematics, it is notable for being a perfect square: 961 = 31^2.

Its prime factorization is 31^2, making it a composite number. It is an odd square and can be described as the square of the prime number 31.

In other numeral systems, 961 is represented as 0x3C1 in hexadecimal, 0o1701 in octal, and 1111000001 in binary.

In Roman numerals, 961 is written as CMLXI.

Unicode uses decimal 961 for a specific character: the Greek small letter rho, encoded as U+03C1.

Internationally, 961 is the country calling code for Lebanon, written as +961 in telephone numbers.

As a year, 961 CE sits in the early medieval period of the Gregorian calendar.