320007813 has 8 divisors (see below), whose sum is σ = 451775808. Its totient is φ = 200789184.

The previous prime is 320007797. The next prime is 320007817. The reversal of 320007813 is 318700023.

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

It is not a de Polignac number, because 320007813 - 2⁴ = 320007797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320007817) 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, 3137281 + ... + 3137382.

It is an arithmetic number, because the mean of its divisors is an integer number (56471976).

Almost surely, 2^320007813 is an apocalyptic number.

It is an amenable number.

320007813 is a deficient number, since it is larger than the sum of its proper divisors (131767995).

320007813 is a wasteful number, since it uses less digits than its factorization.

320007813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6274683.

The product of its (nonzero) digits is 1008, while the sum is 24.

The square root of 320007813 is about 17888.7621986542. The cubic root of 320007813 is about 683.9959453096.

Adding to 320007813 its reverse (318700023), we get a palindrome (638707836).

The spelling of 320007813 in words is "three hundred twenty million, seven thousand, eight hundred thirteen".