343540 has 24 divisors (see below), whose sum is σ = 733320. Its totient is φ = 135168.

The previous prime is 343531. The next prime is 343543. The reversal of 343540 is 45343.

343540 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 144 + 343396 = 12^2 + 586^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343543) 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, 1684 + ... + 1876.

It is an arithmetic number, because the mean of its divisors is an integer number (30555).

2³⁴³⁵⁴⁰ is an apocalyptic number.

It is an amenable number.

343540 is an abundant number, since it is smaller than the sum of its proper divisors (389780).

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

343540 is a wasteful number, since it uses less digits than its factorization.

343540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291 (or 289 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 19.

The square root of 343540 is about 586.1228540161. The cubic root of 343540 is about 70.0367154330.

Adding to 343540 its reverse (45343), we get a palindrome (388883).

The spelling of 343540 in words is "three hundred forty-three thousand, five hundred forty".