320310213 has 16 divisors (see below), whose sum is σ = 446394240. Its totient is φ = 203914304.

The previous prime is 320310187. The next prime is 320310223. The reversal of 320310213 is 312013023.

It is a cyclic number.

It is not a de Polignac number, because 320310213 - 2¹² = 320306117 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 320310192 and 320310201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320310223) 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, 41503 + ... + 48611.

It is an arithmetic number, because the mean of its divisors is an integer number (27899640).

Almost surely, 2^320310213 is an apocalyptic number.

It is an amenable number.

320310213 is a deficient number, since it is larger than the sum of its proper divisors (126084027).

320310213 is a wasteful number, since it uses less digits than its factorization.

320310213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7788.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 320310213 is about 17897.2124365779. The cubic root of 320310213 is about 684.2113309413.

Adding to 320310213 its reverse (312013023), we get a palindrome (632323236).

The spelling of 320310213 in words is "three hundred twenty million, three hundred ten thousand, two hundred thirteen".