320244213 has 16 divisors (see below), whose sum is σ = 441754560. Its totient is φ = 206199936.

The previous prime is 320244209. The next prime is 320244251. The reversal of 320244213 is 312442023.

It is not a de Polignac number, because 320244213 - 2² = 320244209 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 320244213.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320244713) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4678 + ... + 25736.

It is an arithmetic number, because the mean of its divisors is an integer number (27609660).

Almost surely, 2^320244213 is an apocalyptic number.

It is an amenable number.

320244213 is a deficient number, since it is larger than the sum of its proper divisors (121510347).

320244213 is a wasteful number, since it uses less digits than its factorization.

320244213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21236.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 320244213 is about 17895.3684790227. The cubic root of 320244213 is about 684.1643337409.

Adding to 320244213 its reverse (312442023), we get a palindrome (632686236).

The spelling of 320244213 in words is "three hundred twenty million, two hundred forty-four thousand, two hundred thirteen".