320043121 has 8 divisors (see below), whose sum is σ = 325774400. Its totient is φ = 314340048.

The previous prime is 320043107. The next prime is 320043161. The reversal of 320043121 is 121340023.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 320043121 - 2⁷ = 320042993 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 320043095 and 320043104.

It is not an unprimeable number, because it can be changed into a prime (320043161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16540 + ... + 30226.

It is an arithmetic number, because the mean of its divisors is an integer number (40721800).

Almost surely, 2^320043121 is an apocalyptic number.

It is an amenable number.

320043121 is a deficient number, since it is larger than the sum of its proper divisors (5731279).

320043121 is a wasteful number, since it uses less digits than its factorization.

320043121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14103.

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 320043121 is about 17889.7490479883. The cubic root of 320043121 is about 684.0211005711.

Adding to 320043121 its reverse (121340023), we get a palindrome (441383144).

The spelling of 320043121 in words is "three hundred twenty million, forty-three thousand, one hundred twenty-one".