204431194 has 12 divisors (see below), whose sum is σ = 337058442. Its totient is φ = 92923160.

The previous prime is 204431189. The next prime is 204431221. The reversal of 204431194 is 491134402.

204431194 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 105329169 + 99102025 = 10263^2 + 9955^2 .

It is a super-2 number, since 2×204431194² = 83584226160531272, which contains 22 as substring.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 422137 + ... + 422620.

Almost surely, 2^204431194 is an apocalyptic number.

204431194 is a deficient number, since it is larger than the sum of its proper divisors (132627248).

204431194 is a wasteful number, since it uses less digits than its factorization.

204431194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844781 (or 844770 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 204431194 is about 14297.9436983085. The cubic root of 204431194 is about 589.0910008969.

Adding to 204431194 its reverse (491134402), we get a palindrome (695565596).

The spelling of 204431194 in words is "two hundred four million, four hundred thirty-one thousand, one hundred ninety-four".