320201213 has 4 divisors (see below), whose sum is σ = 320254908. Its totient is φ = 320147520.

The previous prime is 320201117. The next prime is 320201221. The reversal of 320201213 is 312102023.

It is a happy number.

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 78180964 + 242020249 = 8842^2 + 15557^2 .

It is a cyclic number.

It is not a de Polignac number, because 320201213 - 2¹⁶ = 320135677 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320206213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16598 + ... + 30263.

It is an arithmetic number, because the mean of its divisors is an integer number (80063727).

Almost surely, 2^320201213 is an apocalyptic number.

It is an amenable number.

320201213 is a deficient number, since it is larger than the sum of its proper divisors (53695).

320201213 is an equidigital number, since it uses as much as digits as its factorization.

320201213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53694.

The product of its (nonzero) digits is 72, while the sum is 14.

The square root of 320201213 is about 17894.1670105093. The cubic root of 320201213 is about 684.1337108788.

Adding to 320201213 its reverse (312102023), we get a palindrome (632303236).

It can be divided in two parts, 32020 and 1213, that added together give a palindrome (33233).

The spelling of 320201213 in words is "three hundred twenty million, two hundred one thousand, two hundred thirteen".