320500213 has 16 divisors (see below), whose sum is σ = 356774400. Its totient is φ = 285450480.

The previous prime is 320500181. The next prime is 320500231. The reversal of 320500213 is 312005023.

It is a cyclic number.

It is not a de Polignac number, because 320500213 - 2⁵ = 320500181 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 (320500273) 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, 245320 + ... + 246622.

It is an arithmetic number, because the mean of its divisors is an integer number (22298400).

Almost surely, 2^320500213 is an apocalyptic number.

It is an amenable number.

320500213 is a deficient number, since it is larger than the sum of its proper divisors (36274187).

320500213 is a wasteful number, since it uses less digits than its factorization.

320500213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1752.

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 320500213 is about 17902.5197388524. The cubic root of 320500213 is about 684.3465898787.

Adding to 320500213 its reverse (312005023), we get a palindrome (632505236).

The spelling of 320500213 in words is "three hundred twenty million, five hundred thousand, two hundred thirteen".