343280 has 40 divisors (see below), whose sum is σ = 913632. Its totient is φ = 117504.

The previous prime is 343267. The next prime is 343289. The reversal of 343280 is 82343.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 343280.

It is not an unprimeable number, because it can be changed into a prime (343289) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254 + ... + 866.

2³⁴³²⁸⁰ 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 343280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (456816).

343280 is an abundant number, since it is smaller than the sum of its proper divisors (570352).

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

343280 is a wasteful number, since it uses less digits than its factorization.

343280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 633 (or 627 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 343280 is about 585.9010155308. The cubic root of 343280 is about 70.0190424384.

The spelling of 343280 in words is "three hundred forty-three thousand, two hundred eighty".