320023213 has 8 divisors (see below), whose sum is σ = 337032000. Its totient is φ = 303031008.

The previous prime is 320023153. The next prime is 320023217. The reversal of 320023213 is 312320023.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-320023213 is a prime.

It is a super-3 number, since 3×320023213³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320023217) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66513 + ... + 71161.

It is an arithmetic number, because the mean of its divisors is an integer number (42129000).

Almost surely, 2^320023213 is an apocalyptic number.

It is an amenable number.

320023213 is a deficient number, since it is larger than the sum of its proper divisors (17008787).

320023213 is a wasteful number, since it uses less digits than its factorization.

320023213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8291.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 320023213 is about 17889.1926313068. The cubic root of 320023213 is about 684.0069173006.

Adding to 320023213 its reverse (312320023), we get a palindrome (632343236).

The spelling of 320023213 in words is "three hundred twenty million, twenty-three thousand, two hundred thirteen".