320111104 has 40 divisors (see below), whose sum is σ = 641236860. Its totient is φ = 159645696.

The previous prime is 320111101. The next prime is 320111123. The reversal of 320111104 is 401111023.

It can be written as a sum of positive squares in 2 ways, for example, as 268960000 + 51151104 = 16400^2 + 7152^2 .

It is a super-2 number, since 2×320111104² = 204942237808197632, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (320111101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344112 + ... + 345040.

Almost surely, 2^320111104 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320111104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (320618430).

320111104 is an abundant number, since it is smaller than the sum of its proper divisors (321125756).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

320111104 is an frugal number, since it uses more digits than its factorization.

320111104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1620 (or 1604 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 13.

The square root of 320111104 is about 17891.6490016991. The cubic root of 320111104 is about 684.0695299974.

Adding to 320111104 its reverse (401111023), we get a palindrome (721222127).

The spelling of 320111104 in words is "three hundred twenty million, one hundred eleven thousand, one hundred four".