340220343 has 16 divisors (see below), whose sum is σ = 464748416. Its totient is φ = 221266080.

The previous prime is 340220339. The next prime is 340220359. The reversal of 340220343 is 343022043.

It is not a de Polignac number, because 340220343 - 2² = 340220339 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (340220333) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 208296 + ... + 209922.

It is an arithmetic number, because the mean of its divisors is an integer number (29046776).

Almost surely, 2^340220343 is an apocalyptic number.

340220343 is a deficient number, since it is larger than the sum of its proper divisors (124528073).

340220343 is a wasteful number, since it uses less digits than its factorization.

340220343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3294.

The product of its (nonzero) digits is 1728, while the sum is 21.

The square root of 340220343 is about 18445.0628353497. The cubic root of 340220343 is about 698.1039457625.

Adding to 340220343 its reverse (343022043), we get a palindrome (683242386).

The spelling of 340220343 in words is "three hundred forty million, two hundred twenty thousand, three hundred forty-three".