320440201 has 4 divisors (see below), whose sum is σ = 320917012. Its totient is φ = 319963392.

The previous prime is 320440199. The next prime is 320440207. The reversal of 320440201 is 102044023.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 214329600 + 106110601 = 14640^2 + 10301^2 .

It is a cyclic number.

It is not a de Polignac number, because 320440201 - 2¹ = 320440199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320440207) 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 3 ways as a sum of consecutive naturals, for example, 237396 + ... + 238741.

It is an arithmetic number, because the mean of its divisors is an integer number (80229253).

Almost surely, 2^320440201 is an apocalyptic number.

It is an amenable number.

320440201 is a deficient number, since it is larger than the sum of its proper divisors (476811).

320440201 is an equidigital number, since it uses as much as digits as its factorization.

320440201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 476810.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 320440201 is about 17900.8435834739. The cubic root of 320440201 is about 684.3038737644.

Adding to 320440201 its reverse (102044023), we get a palindrome (422484224).

The spelling of 320440201 in words is "three hundred twenty million, four hundred forty thousand, two hundred one".