204202431 has 16 divisors (see below), whose sum is σ = 303379200. Its totient is φ = 135749304.

The previous prime is 204202421. The next prime is 204202469. The reversal of 204202431 is 134202402.

204202431 is a `hidden beast` number, since 2 + 0 + 420 + 243 + 1 = 666.

It is not a de Polignac number, because 204202431 - 2⁹ = 204201919 is a prime.

It is a super-2 number, since 2×204202431² = 83397265652619522, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204202421) 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, 841 + ... + 20226.

It is an arithmetic number, because the mean of its divisors is an integer number (18961200).

Almost surely, 2^204202431 is an apocalyptic number.

204202431 is a deficient number, since it is larger than the sum of its proper divisors (99176769).

204202431 is a wasteful number, since it uses less digits than its factorization.

204202431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21435 (or 21429 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 204202431 is about 14289.9416023999. The cubic root of 204202431 is about 588.8711836231.

Adding to 204202431 its reverse (134202402), we get a palindrome (338404833).

The spelling of 204202431 in words is "two hundred four million, two hundred two thousand, four hundred thirty-one".