320240340 has 144 divisors (see below), whose sum is σ = 1137427200. Its totient is φ = 71400960.

The previous prime is 320240321. The next prime is 320240351. The reversal of 320240340 is 43042023.

320240340 is a `hidden beast` number, since 320 + 2 + 4 + 0 + 340 = 666.

320240340 is digitally balanced in base 3 and base 9, because in such bases 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 (18).

320240340 is strictly pandigital in base 9.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 48561 + ... + 54759.

It is an arithmetic number, because the mean of its divisors is an integer number (7898800).

Almost surely, 2^320240340 is an apocalyptic number.

320240340 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 320240340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (568713600).

320240340 is an abundant number, since it is smaller than the sum of its proper divisors (817186860).

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

320240340 is a wasteful number, since it uses less digits than its factorization.

320240340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6262 (or 6257 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 18.

The square root of 320240340 is about 17895.2602663387. The cubic root of 320240340 is about 684.1615756592.

Adding to 320240340 its reverse (43042023), we get a palindrome (363282363).

The spelling of 320240340 in words is "three hundred twenty million, two hundred forty thousand, three hundred forty".