343440320 has 112 divisors (see below), whose sum is σ = 855878400. Its totient is φ = 131112960.

The previous prime is 343440283. The next prime is 343440323. The reversal of 343440320 is 23044343.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343440323) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 882686 + ... + 883074.

Almost surely, 2^343440320 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 343440320, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (427939200).

343440320 is an abundant number, since it is smaller than the sum of its proper divisors (512438080).

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

343440320 is a wasteful number, since it uses less digits than its factorization.

343440320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 526 (or 516 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 23.

The square root of 343440320 is about 18532.1428874267. The cubic root of 343440320 is about 700.2994093311.

Adding to 343440320 its reverse (23044343), we get a palindrome (366484663).

The spelling of 343440320 in words is "three hundred forty-three million, four hundred forty thousand, three hundred twenty".