204311240549 has 32 divisors (see below), whose sum is σ = 233837721600. Its totient is φ = 177162163200.

The previous prime is 204311240543. The next prime is 204311240561. The reversal of 204311240549 is 945042113402.

It is a cyclic number.

It is not a de Polignac number, because 204311240549 - 2²⁰ = 204310191973 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 (204311240543) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3257009 + ... + 3319145.

It is an arithmetic number, because the mean of its divisors is an integer number (7307428800).

Almost surely, 2^204311240549 is an apocalyptic number.

It is an amenable number.

204311240549 is a deficient number, since it is larger than the sum of its proper divisors (29526481051).

204311240549 is a wasteful number, since it uses less digits than its factorization.

204311240549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62421.

The product of its (nonzero) digits is 34560, while the sum is 35.

The spelling of 204311240549 in words is "two hundred four billion, three hundred eleven million, two hundred forty thousand, five hundred forty-nine".