320541140 has 24 divisors (see below), whose sum is σ = 673983240. Its totient is φ = 128055168.

The previous prime is 320541131. The next prime is 320541161. The reversal of 320541140 is 41145023.

It can be written as a sum of positive squares in 4 ways, for example, as 111218116 + 209323024 = 10546^2 + 14468^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 6914 + ... + 26246.

It is an arithmetic number, because the mean of its divisors is an integer number (28082635).

Almost surely, 2^320541140 is an apocalyptic number.

It is an amenable number.

320541140 is an abundant number, since it is smaller than the sum of its proper divisors (353442100).

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

320541140 is a wasteful number, since it uses less digits than its factorization.

320541140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20171 (or 20169 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 20.

The square root of 320541140 is about 17903.6627537496. The cubic root of 320541140 is about 684.3757183676.

Adding to 320541140 its reverse (41145023), we get a palindrome (361686163).

The spelling of 320541140 in words is "three hundred twenty million, five hundred forty-one thousand, one hundred forty".