320311311 has 16 divisors (see below), whose sum is σ = 438234720. Its totient is φ = 207982080.

The previous prime is 320311309. The next prime is 320311319. The reversal of 320311311 is 113113023.

It is not a de Polignac number, because 320311311 - 2¹ = 320311309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320311319) 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 15 ways as a sum of consecutive naturals, for example, 85371 + ... + 89043.

It is an arithmetic number, because the mean of its divisors is an integer number (27389670).

Almost surely, 2^320311311 is an apocalyptic number.

320311311 is a deficient number, since it is larger than the sum of its proper divisors (117923409).

320311311 is a wasteful number, since it uses less digits than its factorization.

320311311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4426.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 320311311 is about 17897.2431117197. The cubic root of 320311311 is about 684.2121127493.

Adding to 320311311 its reverse (113113023), we get a palindrome (433424334).

The spelling of 320311311 in words is "three hundred twenty million, three hundred eleven thousand, three hundred eleven".