204401131 has 16 divisors (see below), whose sum is σ = 226437120. Its totient is φ = 182963520.

The previous prime is 204401117. The next prime is 204401147. The reversal of 204401131 is 131104402.

It is a cyclic number.

It is not a de Polignac number, because 204401131 - 2¹⁹ = 203876843 is a prime.

It is a super-2 number, since 2×204401131² = 83559644708158322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204401531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 252255 + ... + 253063.

It is an arithmetic number, because the mean of its divisors is an integer number (14152320).

Almost surely, 2^204401131 is an apocalyptic number.

204401131 is a deficient number, since it is larger than the sum of its proper divisors (22035989).

204401131 is a wasteful number, since it uses less digits than its factorization.

204401131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1146.

The product of its (nonzero) digits is 96, while the sum is 16.

The square root of 204401131 is about 14296.8923546343. The cubic root of 204401131 is about 589.0621228661.

Adding to 204401131 its reverse (131104402), we get a palindrome (335505533).

The spelling of 204401131 in words is "two hundred four million, four hundred one thousand, one hundred thirty-one".