204181682131 has 8 divisors (see below), whose sum is σ = 236833337600. Its totient is φ = 172400737608.

The previous prime is 204181682129. The next prime is 204181682197. The reversal of 204181682131 is 131286181402.

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 204181682131 - 2¹ = 204181682129 is a prime.

It is a super-2 number, since 2×204181682131² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204181682431) 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, 217677231 + ... + 217678168.

It is an arithmetic number, because the mean of its divisors is an integer number (29604167200).

Almost surely, 2^204181682131 is an apocalyptic number.

204181682131 is a deficient number, since it is larger than the sum of its proper divisors (32651655469).

204181682131 is an equidigital number, since it uses as much as digits as its factorization.

204181682131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 435355473.

The product of its (nonzero) digits is 18432, while the sum is 37.

The spelling of 204181682131 in words is "two hundred four billion, one hundred eighty-one million, six hundred eighty-two thousand, one hundred thirty-one".