343985 has 8 divisors (see below), whose sum is σ = 417960. Its totient is φ = 271744.

The previous prime is 343963. The next prime is 343997. The reversal of 343985 is 589343.

It can be written as a sum of positive squares in 4 ways, for example, as 4096 + 339889 = 64^2 + 583^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-343985 is a prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 343985.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59 + ... + 831.

It is an arithmetic number, because the mean of its divisors is an integer number (52245).

2³⁴³⁹⁸⁵ is an apocalyptic number.

It is an amenable number.

343985 is a deficient number, since it is larger than the sum of its proper divisors (73975).

343985 is an equidigital number, since it uses as much as digits as its factorization.

343985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 867.

The product of its digits is 12960, while the sum is 32.

The square root of 343985 is about 586.5023444113. The cubic root of 343985 is about 70.0669427633.

The spelling of 343985 in words is "three hundred forty-three thousand, nine hundred eighty-five".