343021320 has 96 divisors (see below), whose sum is σ = 1140796800. Its totient is φ = 89341056.

The previous prime is 343021319. The next prime is 343021373. The reversal of 343021320 is 23120343.

343021320 is a `hidden beast` number, since 3 + 430 + 213 + 20 = 666.

343021320 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 (18).

It is a junction number, because it is equal to n+sod(n) for n = 343021293 and 343021302.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4401 + ... + 26559.

It is an arithmetic number, because the mean of its divisors is an integer number (11883300).

Almost surely, 2^343021320 is an apocalyptic number.

343021320 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 343021320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (570398400).

343021320 is an abundant number, since it is smaller than the sum of its proper divisors (797775480).

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

343021320 is a wasteful number, since it uses less digits than its factorization.

343021320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22219 (or 22212 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 18.

The square root of 343021320 is about 18520.8347544056. The cubic root of 343021320 is about 700.0145031009.

Adding to 343021320 its reverse (23120343), we get a palindrome (366141663).

The spelling of 343021320 in words is "three hundred forty-three million, twenty-one thousand, three hundred twenty".