263212961 has 32 divisors (see below), whose sum is σ = 306892800. Its totient is φ = 223534080.

The previous prime is 263212949. The next prime is 263212967. The reversal of 263212961 is 169212362.

It is a happy number.

It is not a de Polignac number, because 263212961 - 2²² = 259018657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (263212967) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2072480 + ... + 2072606.

It is an arithmetic number, because the mean of its divisors is an integer number (9590400).

Almost surely, 2^263212961 is an apocalyptic number.

It is an amenable number.

263212961 is a deficient number, since it is larger than the sum of its proper divisors (43679839).

263212961 is a wasteful number, since it uses less digits than its factorization.

263212961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 329.

The product of its digits is 7776, while the sum is 32.

The square root of 263212961 is about 16223.8392805156. The cubic root of 263212961 is about 640.8687429142.

The spelling of 263212961 in words is "two hundred sixty-three million, two hundred twelve thousand, nine hundred sixty-one".