204319081 has 8 divisors (see below), whose sum is σ = 209579400. Its totient is φ = 199110912.

The previous prime is 204319057. The next prime is 204319099. The reversal of 204319081 is 180913402.

It is a happy number.

204319081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 15531481 + 188787600 = 3941^2 + 13740^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 204319081 - 2⁷ = 204318953 is a prime.

It is a super-3 number, since 3×204319081³ (a number of 26 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204319021) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5040 + ... + 20833.

It is an arithmetic number, because the mean of its divisors is an integer number (26197425).

Almost surely, 2^204319081 is an apocalyptic number.

It is an amenable number.

204319081 is a deficient number, since it is larger than the sum of its proper divisors (5260319).

204319081 is a wasteful number, since it uses less digits than its factorization.

204319081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26075.

The product of its (nonzero) digits is 1728, while the sum is 28.

The square root of 204319081 is about 14294.0225618963. The cubic root of 204319081 is about 588.9832925525.

The spelling of 204319081 in words is "two hundred four million, three hundred nineteen thousand, eighty-one".