320213211 has 4 divisors (see below), whose sum is σ = 426950952. Its totient is φ = 213475472.

The previous prime is 320213197. The next prime is 320213261. The reversal of 320213211 is 112312023.

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

It is a cyclic number.

It is not a de Polignac number, because 320213211 - 2⁶ = 320213147 is a prime.

It is not an unprimeable number, because it can be changed into a prime (320213261) 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, 53368866 + ... + 53368871.

It is an arithmetic number, because the mean of its divisors is an integer number (106737738).

Almost surely, 2^320213211 is an apocalyptic number.

320213211 is a deficient number, since it is larger than the sum of its proper divisors (106737741).

320213211 is a wasteful number, since it uses less digits than its factorization.

320213211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106737740.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 320213211 is about 17894.5022562797. The cubic root of 320213211 is about 684.1422556452.

Adding to 320213211 its reverse (112312023), we get a palindrome (432525234).

It can be divided in two parts, 320 and 213211, that added together give a triangular number (213531 = T₆₅₃).

The spelling of 320213211 in words is "three hundred twenty million, two hundred thirteen thousand, two hundred eleven".