340347 has 16 divisors (see below), whose sum is σ = 546560. Its totient is φ = 184032.

The previous prime is 340339. The next prime is 340369. The reversal of 340347 is 743043.

It is not a de Polignac number, because 340347 - 2³ = 340339 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nialpdrome in base 13.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 340347.

It is not an unprimeable number, because it can be changed into a prime (340337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28 + ... + 825.

It is an arithmetic number, because the mean of its divisors is an integer number (34160).

2³⁴⁰³⁴⁷ is an apocalyptic number.

340347 is a deficient number, since it is larger than the sum of its proper divisors (206213).

340347 is a wasteful number, since it uses less digits than its factorization.

340347 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 882.

The product of its (nonzero) digits is 1008, while the sum is 21.

The square root of 340347 is about 583.3926636494. The cubic root of 340347 is about 69.8190564903.

The spelling of 340347 in words is "three hundred forty thousand, three hundred forty-seven", and thus it is an iban number.