320348617 has 4 divisors (see below), whose sum is σ = 320409540. Its totient is φ = 320287696.

The previous prime is 320348599. The next prime is 320348653. The reversal of 320348617 is 716843023.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 248251536 + 72097081 = 15756^2 + 8491^2 .

It is a cyclic number.

It is not a de Polignac number, because 320348617 - 2⁷ = 320348489 is a prime.

It is a super-3 number, since 3×320348617³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320340617) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21742 + ... + 33367.

It is an arithmetic number, because the mean of its divisors is an integer number (80102385).

Almost surely, 2^320348617 is an apocalyptic number.

It is an amenable number.

320348617 is a deficient number, since it is larger than the sum of its proper divisors (60923).

320348617 is an equidigital number, since it uses as much as digits as its factorization.

320348617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60922.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 320348617 is about 17898.2853089339. The cubic root of 320348617 is about 684.2386746442.

The spelling of 320348617 in words is "three hundred twenty million, three hundred forty-eight thousand, six hundred seventeen".