321116481 has 28 divisors (see below), whose sum is σ = 550242432. Its totient is φ = 183492216.

The previous prime is 321116447. The next prime is 321116483. The reversal of 321116481 is 184611123.

It is a happy number.

321116481 is a `hidden beast` number, since 3 + 2 + 1 + 11 + 648 + 1 = 666.

It is not a de Polignac number, because 321116481 - 2⁹ = 321115969 is a prime.

It is a super-2 number, since 2×321116481² = 206231588739646722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (321116483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 26361 + ... + 36566.

Almost surely, 2^321116481 is an apocalyptic number.

It is an amenable number.

321116481 is a deficient number, since it is larger than the sum of its proper divisors (229125951).

321116481 is an frugal number, since it uses more digits than its factorization.

321116481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62952 (or 62937 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 321116481 is about 17919.7232400503. The cubic root of 321116481 is about 684.7849368368.

The spelling of 321116481 in words is "three hundred twenty-one million, one hundred sixteen thousand, four hundred eighty-one".