320225140 has 12 divisors (see below), whose sum is σ = 672472836. Its totient is φ = 128090048.

The previous prime is 320225137. The next prime is 320225161. The reversal of 320225140 is 41522023.

320225140 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 157101156 + 163123984 = 12534^2 + 12772^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8005609 + ... + 8005648.

It is an arithmetic number, because the mean of its divisors is an integer number (56039403).

Almost surely, 2^320225140 is an apocalyptic number.

It is an amenable number.

320225140 is an abundant number, since it is smaller than the sum of its proper divisors (352247696).

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

320225140 is a wasteful number, since it uses less digits than its factorization.

320225140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16011266 (or 16011264 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 320225140 is about 17894.8355678391. The cubic root of 320225140 is about 684.1507510595.

Adding to 320225140 its reverse (41522023), we get a palindrome (361747163).

The spelling of 320225140 in words is "three hundred twenty million, two hundred twenty-five thousand, one hundred forty".