320031340 has 48 divisors (see below), whose sum is σ = 686246400. Its totient is φ = 125330112.

The previous prime is 320031337. The next prime is 320031359. The reversal of 320031340 is 43130023.

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 15 ways as a sum of consecutive naturals, for example, 432691 + ... + 433429.

It is an arithmetic number, because the mean of its divisors is an integer number (14296800).

Almost surely, 2^320031340 is an apocalyptic number.

It is an amenable number.

320031340 is an abundant number, since it is smaller than the sum of its proper divisors (366215060).

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

320031340 is a wasteful number, since it uses less digits than its factorization.

320031340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1174 (or 1172 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 320031340 is about 17889.4197781817. The cubic root of 320031340 is about 684.0127073777.

Adding to 320031340 its reverse (43130023), we get a palindrome (363161363).

The spelling of 320031340 in words is "three hundred twenty million, thirty-one thousand, three hundred forty".