204631431455 has 12 divisors (see below), whose sum is σ = 269910550056. Its totient is φ = 148822858800.

The previous prime is 204631431451. The next prime is 204631431461. The reversal of 204631431455 is 554134136402.

It is not a de Polignac number, because 204631431455 - 2² = 204631431451 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 (204631431451) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 169116281 + ... + 169117490.

It is an arithmetic number, because the mean of its divisors is an integer number (22492545838).

Almost surely, 2^204631431455 is an apocalyptic number.

204631431455 is a deficient number, since it is larger than the sum of its proper divisors (65279118601).

204631431455 is a wasteful number, since it uses less digits than its factorization.

204631431455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338233798 (or 338233787 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 38.

Adding to 204631431455 its reverse (554134136402), we get a palindrome (758765567857).

The spelling of 204631431455 in words is "two hundred four billion, six hundred thirty-one million, four hundred thirty-one thousand, four hundred fifty-five".