204240343 has 4 divisors (see below), whose sum is σ = 204274800. Its totient is φ = 204205888.

The previous prime is 204240319. The next prime is 204240353. The reversal of 204240343 is 343042402.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204240343 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 (204240353) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5818 + ... + 21031.

It is an arithmetic number, because the mean of its divisors is an integer number (51068700).

Almost surely, 2^204240343 is an apocalyptic number.

204240343 is a deficient number, since it is larger than the sum of its proper divisors (34457).

204240343 is an equidigital number, since it uses as much as digits as its factorization.

204240343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34456.

The product of its (nonzero) digits is 2304, while the sum is 22.

The square root of 204240343 is about 14291.2680682996. The cubic root of 204240343 is about 588.9076244280.

Adding to 204240343 its reverse (343042402), we get a palindrome (547282745).

The spelling of 204240343 in words is "two hundred four million, two hundred forty thousand, three hundred forty-three".