340345 has 8 divisors (see below), whose sum is σ = 418176. Its totient is φ = 265776.

The previous prime is 340339. The next prime is 340369. The reversal of 340345 is 543043.

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

It is a cyclic number.

It is not a de Polignac number, because 340345 - 2³ = 340337 is a prime.

It is a d-powerful number, because it can be written as 3 + 4³ + 3² + 0 + 4⁹ + 5⁷ .

It is a Duffinian number.

It is a nialpdrome in base 13.

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, 577 + ... + 1006.

It is an arithmetic number, because the mean of its divisors is an integer number (52272).

2³⁴⁰³⁴⁵ is an apocalyptic number.

It is an amenable number.

340345 is a deficient number, since it is larger than the sum of its proper divisors (77831).

340345 is a wasteful number, since it uses less digits than its factorization.

340345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1631.

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

The square root of 340345 is about 583.3909495356. The cubic root of 340345 is about 69.8189197295.

Adding to 340345 its reverse (543043), we get a palindrome (883388).

The spelling of 340345 in words is "three hundred forty thousand, three hundred forty-five".