204163131 has 8 divisors (see below), whose sum is σ = 272937280. Its totient is φ = 135748872.

The previous prime is 204163123. The next prime is 204163171. The reversal of 204163131 is 131361402.

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

It is not a de Polignac number, because 204163131 - 2³ = 204163123 is a prime.

It is a super-2 number, since 2×204163131² = 83365168119446322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204163098 and 204163107.

It is not an unprimeable number, because it can be changed into a prime (204163171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88645 + ... + 90918.

It is an arithmetic number, because the mean of its divisors is an integer number (34117160).

Almost surely, 2^204163131 is an apocalyptic number.

204163131 is a deficient number, since it is larger than the sum of its proper divisors (68774149).

204163131 is a wasteful number, since it uses less digits than its factorization.

204163131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179945.

The product of its (nonzero) digits is 432, while the sum is 21.

The square root of 204163131 is about 14288.5664431391. The cubic root of 204163131 is about 588.8334039189.

The spelling of 204163131 in words is "two hundred four million, one hundred sixty-three thousand, one hundred thirty-one".