340204323 has 16 divisors (see below), whose sum is σ = 495783936. Its totient is φ = 206574720.

The previous prime is 340204321. The next prime is 340204343. The reversal of 340204323 is 323402043.

It is not a de Polignac number, because 340204323 - 2¹ = 340204321 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 340204323.

It is not an unprimeable number, because it can be changed into a prime (340204321) 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, 106011 + ... + 109172.

It is an arithmetic number, because the mean of its divisors is an integer number (30986496).

Almost surely, 2^340204323 is an apocalyptic number.

340204323 is a deficient number, since it is larger than the sum of its proper divisors (155579613).

340204323 is a wasteful number, since it uses less digits than its factorization.

340204323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 215234.

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

The square root of 340204323 is about 18444.6285676888. The cubic root of 340204323 is about 698.0929883531.

Adding to 340204323 its reverse (323402043), we get a palindrome (663606366).

The spelling of 340204323 in words is "three hundred forty million, two hundred four thousand, three hundred twenty-three".