320323213 has 8 divisors (see below), whose sum is σ = 372288960. Its totient is φ = 269908800.

The previous prime is 320323187. The next prime is 320323219. The reversal of 320323213 is 312323023.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 320323213 - 2⁹ = 320322701 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 (320323219) 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 7 ways as a sum of consecutive naturals, for example, 387388 + ... + 388213.

It is an arithmetic number, because the mean of its divisors is an integer number (46536120).

Almost surely, 2^320323213 is an apocalyptic number.

It is an amenable number.

320323213 is a deficient number, since it is larger than the sum of its proper divisors (51965747).

320323213 is an equidigital number, since it uses as much as digits as its factorization.

320323213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775667.

The product of its (nonzero) digits is 648, while the sum is 19.

The square root of 320323213 is about 17897.5756179433. The cubic root of 320323213 is about 684.2205872046.

Adding to 320323213 its reverse (312323023), we get a palindrome (632646236).

It can be divided in two parts, 32032 and 3213, that added together give a triangular number (35245 = T₂₆₅).

The spelling of 320323213 in words is "three hundred twenty million, three hundred twenty-three thousand, two hundred thirteen".