204131047 has 2 divisors, whose sum is σ = 204131048. Its totient is φ = 204131046.

The previous prime is 204131017. The next prime is 204131051. The reversal of 204131047 is 740131402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204131047 - 2²³ = 195742439 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204131017) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102065523 + 102065524.

It is an arithmetic number, because the mean of its divisors is an integer number (102065524).

Almost surely, 2^204131047 is an apocalyptic number.

204131047 is a deficient number, since it is larger than the sum of its proper divisors (1).

204131047 is an equidigital number, since it uses as much as digits as its factorization.

204131047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 204131047 is about 14287.4436831786. The cubic root of 204131047 is about 588.8025574735.

Adding to 204131047 its reverse (740131402), we get a palindrome (944262449).

The spelling of 204131047 in words is "two hundred four million, one hundred thirty-one thousand, forty-seven".