320140140 has 48 divisors (see below), whose sum is σ = 913314528. Its totient is φ = 83759104.

The previous prime is 320140127. The next prime is 320140211. The reversal of 320140140 is 41041023.

320140140 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 47157 + ... + 53516.

It is an arithmetic number, because the mean of its divisors is an integer number (19027386).

Almost surely, 2^320140140 is an apocalyptic number.

320140140 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

320140140 is an abundant number, since it is smaller than the sum of its proper divisors (593174388).

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

320140140 is a wasteful number, since it uses less digits than its factorization.

320140140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 100738 (or 100736 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 320140140 is about 17892.4604233180. The cubic root of 320140140 is about 684.0902124439.

Adding to 320140140 its reverse (41041023), we get a palindrome (361181163).

The spelling of 320140140 in words is "three hundred twenty million, one hundred forty thousand, one hundred forty".