320444121 has 8 divisors (see below), whose sum is σ = 428387680. Its totient is φ = 213064992.

The previous prime is 320444107. The next prime is 320444129. The reversal of 320444121 is 121444023.

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

It is not a de Polignac number, because 320444121 - 2¹⁹ = 319919833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320444129) 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, 139780 + ... + 142053.

It is an arithmetic number, because the mean of its divisors is an integer number (53548460).

Almost surely, 2^320444121 is an apocalyptic number.

It is an amenable number.

320444121 is a deficient number, since it is larger than the sum of its proper divisors (107943559).

320444121 is a wasteful number, since it uses less digits than its factorization.

320444121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 282215.

The product of its (nonzero) digits is 768, while the sum is 21.

The square root of 320444121 is about 17900.9530751857. The cubic root of 320444121 is about 684.3066641553.

Adding to 320444121 its reverse (121444023), we get a palindrome (441888144).

The spelling of 320444121 in words is "three hundred twenty million, four hundred forty-four thousand, one hundred twenty-one".