204131439 has 6 divisors (see below), whose sum is σ = 294856536. Its totient is φ = 136087620.

The previous prime is 204131429. The next prime is 204131467. The reversal of 204131439 is 934131402.

It is not a de Polignac number, because 204131439 - 2⁴ = 204131423 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204131429) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11340627 + ... + 11340644.

It is an arithmetic number, because the mean of its divisors is an integer number (49142756).

Almost surely, 2^204131439 is an apocalyptic number.

204131439 is a deficient number, since it is larger than the sum of its proper divisors (90725097).

204131439 is a wasteful number, since it uses less digits than its factorization.

204131439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22681277 (or 22681274 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 204131439 is about 14287.4574015113. The cubic root of 204131439 is about 588.8029343726.

The spelling of 204131439 in words is "two hundred four million, one hundred thirty-one thousand, four hundred thirty-nine".