320013311 has 4 divisors (see below), whose sum is σ = 326051352. Its totient is φ = 313975272.

The previous prime is 320013299. The next prime is 320013359. The reversal of 320013311 is 113310023.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 113310023 = 83 ⋅1365181.

It is a cyclic number.

It is not a de Polignac number, because 320013311 - 2⁶ = 320013247 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (320013511) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3018941 + ... + 3019046.

It is an arithmetic number, because the mean of its divisors is an integer number (81512838).

Almost surely, 2^320013311 is an apocalyptic number.

320013311 is a deficient number, since it is larger than the sum of its proper divisors (6038041).

320013311 is an equidigital number, since it uses as much as digits as its factorization.

320013311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6038040.

The product of its (nonzero) digits is 54, while the sum is 14.

The square root of 320013311 is about 17888.9158698899. The cubic root of 320013311 is about 683.9998624933. Note that the first 3 decimals are identical.

Adding to 320013311 its reverse (113310023), we get a palindrome (433323334).

The spelling of 320013311 in words is "three hundred twenty million, thirteen thousand, three hundred eleven".