320321440441 has 8 divisors (see below), whose sum is σ = 340321439304. Its totient is φ = 300450059520.

The previous prime is 320321440423. The next prime is 320321440489. The reversal of 320321440441 is 144044123023.

It can be written as a sum of positive squares in 4 ways, for example, as 137967673600 + 182353766841 = 371440^2 + 427029^2 .

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 320321440441 - 2³⁵ = 285961702073 is a prime.

It is a super-2 number, since 2×320321440441² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320321441441) 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, 32149350 + ... + 32159311.

It is an arithmetic number, because the mean of its divisors is an integer number (42540179913).

Almost surely, 2^320321440441 is an apocalyptic number.

It is an amenable number.

320321440441 is a deficient number, since it is larger than the sum of its proper divisors (19999998863).

320321440441 is a wasteful number, since it uses less digits than its factorization.

320321440441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64308971.

The product of its (nonzero) digits is 9216, while the sum is 28.

Adding to 320321440441 its reverse (144044123023), we get a palindrome (464365563464).

The spelling of 320321440441 in words is "three hundred twenty billion, three hundred twenty-one million, four hundred forty thousand, four hundred forty-one".