320031120 has 80 divisors (see below), whose sum is σ = 1050468480. Its totient is φ = 80320512.

The previous prime is 320031097. The next prime is 320031169. The reversal of 320031120 is 21130023.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 320031096 and 320031105.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35140 + ... + 43299.

It is an arithmetic number, because the mean of its divisors is an integer number (13130856).

Almost surely, 2^320031120 is an apocalyptic number.

320031120 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320031120 is an abundant number, since it is smaller than the sum of its proper divisors (730437360).

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

320031120 is a wasteful number, since it uses less digits than its factorization.

320031120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78472 (or 78466 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 320031120 is about 17889.4136292948. The cubic root of 320031120 is about 684.0125506401.

Adding to 320031120 its reverse (21130023), we get a palindrome (341161143).

The spelling of 320031120 in words is "three hundred twenty million, thirty-one thousand, one hundred twenty".