204040353 has 16 divisors (see below), whose sum is σ = 297256896. Its totient is φ = 123464640.

The previous prime is 204040271. The next prime is 204040363. The reversal of 204040353 is 353040402.

It is a happy number.

It is not a de Polignac number, because 204040353 - 2²⁴ = 187263137 is a prime.

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 (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17775 + ... + 26907.

It is an arithmetic number, because the mean of its divisors is an integer number (18578556).

Almost surely, 2^204040353 is an apocalyptic number.

It is an amenable number.

204040353 is a deficient number, since it is larger than the sum of its proper divisors (93216543).

204040353 is a wasteful number, since it uses less digits than its factorization.

204040353 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9824.

The product of its (nonzero) digits is 1440, while the sum is 21.

The square root of 204040353 is about 14284.2694247903. The cubic root of 204040353 is about 588.7153442667.

Adding to 204040353 its reverse (353040402), we get a palindrome (557080755).

The spelling of 204040353 in words is "two hundred four million, forty thousand, three hundred fifty-three".