320421201 has 4 divisors (see below), whose sum is σ = 427228272. Its totient is φ = 213614132.

The previous prime is 320421181. The next prime is 320421229. The reversal of 320421201 is 102124023.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 320421201 - 2¹⁷ = 320290129 is a prime.

It is not an unprimeable number, because it can be changed into a prime (320429201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53403531 + ... + 53403536.

It is an arithmetic number, because the mean of its divisors is an integer number (106807068).

Almost surely, 2^320421201 is an apocalyptic number.

It is an amenable number.

320421201 is a deficient number, since it is larger than the sum of its proper divisors (106807071).

320421201 is a wasteful number, since it uses less digits than its factorization.

320421201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106807070.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 320421201 is about 17900.3128743606. The cubic root of 320421201 is about 684.2903485882.

Adding to 320421201 its reverse (102124023), we get a palindrome (422545224).

The spelling of 320421201 in words is "three hundred twenty million, four hundred twenty-one thousand, two hundred one".