204040343 has 4 divisors (see below), whose sum is σ = 219735768. Its totient is φ = 188344920.

The previous prime is 204040271. The next prime is 204040363. The reversal of 204040343 is 343040402.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 204040343 - 2¹⁴ = 204023959 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 (204040363) 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 3 ways as a sum of consecutive naturals, for example, 7847693 + ... + 7847718.

It is an arithmetic number, because the mean of its divisors is an integer number (54933942).

Almost surely, 2^204040343 is an apocalyptic number.

204040343 is a deficient number, since it is larger than the sum of its proper divisors (15695425).

204040343 is a wasteful number, since it uses less digits than its factorization.

204040343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15695424.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 204040343 is about 14284.2690747549. The cubic root of 204040343 is about 588.7153346491.

Adding to 204040343 its reverse (343040402), we get a palindrome (547080745).

The spelling of 204040343 in words is "two hundred four million, forty thousand, three hundred forty-three".