320395307 has 4 divisors (see below), whose sum is σ = 320581920. Its totient is φ = 320208696.

The previous prime is 320395301. The next prime is 320395349. The reversal of 320395307 is 703593023.

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

It is a cyclic number.

It is not a de Polignac number, because 320395307 - 2¹⁶ = 320329771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (320395301) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 90707 + ... + 94172.

It is an arithmetic number, because the mean of its divisors is an integer number (80145480).

Almost surely, 2^320395307 is an apocalyptic number.

320395307 is a deficient number, since it is larger than the sum of its proper divisors (186613).

320395307 is a wasteful number, since it uses less digits than its factorization.

320395307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186612.

The product of its (nonzero) digits is 17010, while the sum is 32.

The square root of 320395307 is about 17899.5895763003. The cubic root of 320395307 is about 684.2719150476.

The spelling of 320395307 in words is "three hundred twenty million, three hundred ninety-five thousand, three hundred seven".