343965 has 16 divisors (see below), whose sum is σ = 574848. Its totient is φ = 175296.

The previous prime is 343963. The next prime is 343997. The reversal of 343965 is 569343.

It is a happy number.

It is not a de Polignac number, because 343965 - 2¹ = 343963 is a prime.

It is an Ulam number.

It is a Curzon number.

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 343965.

It is not an unprimeable number, because it can be changed into a prime (343963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 154 + ... + 843.

It is an arithmetic number, because the mean of its divisors is an integer number (35928).

2³⁴³⁹⁶⁵ is an apocalyptic number.

It is an amenable number.

343965 is a deficient number, since it is larger than the sum of its proper divisors (230883).

343965 is a wasteful number, since it uses less digits than its factorization.

343965 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1028.

The product of its digits is 9720, while the sum is 30.

The square root of 343965 is about 586.4852939333. The cubic root of 343965 is about 70.0655847912.

The spelling of 343965 in words is "three hundred forty-three thousand, nine hundred sixty-five".