320740340 has 24 divisors (see below), whose sum is σ = 673965600. Its totient is φ = 128217888.

The previous prime is 320740337. The next prime is 320740363. The reversal of 320740340 is 43047023.

It is a happy number.

320740340 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37811 + ... + 45509.

It is an arithmetic number, because the mean of its divisors is an integer number (28081900).

Almost surely, 2^320740340 is an apocalyptic number.

It is an amenable number.

320740340 is an abundant number, since it is smaller than the sum of its proper divisors (353225260).

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

320740340 is a wasteful number, since it uses less digits than its factorization.

320740340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9791 (or 9789 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 23.

The square root of 320740340 is about 17909.2249971907. The cubic root of 320740340 is about 684.5174572332.

Adding to 320740340 its reverse (43047023), we get a palindrome (363787363).

The spelling of 320740340 in words is "three hundred twenty million, seven hundred forty thousand, three hundred forty".