204431332 has 36 divisors (see below), whose sum is σ = 418638780. Its totient is φ = 87092544.

The previous prime is 204431303. The next prime is 204431333. The reversal of 204431332 is 233134402.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 188622756 + 15808576 = 13734^2 + 3976^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204431333) 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 11 ways as a sum of consecutive naturals, for example, 30894 + ... + 36922.

It is an arithmetic number, because the mean of its divisors is an integer number (11628855).

Almost surely, 2^204431332 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 204431332, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (209319390).

204431332 is an abundant number, since it is smaller than the sum of its proper divisors (214207448).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204431332 is a wasteful number, since it uses less digits than its factorization.

204431332 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6220 (or 6211 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

The square root of 204431332 is about 14297.9485241765. The cubic root of 204431332 is about 589.0911334509.

Adding to 204431332 its reverse (233134402), we get a palindrome (437565734).

The spelling of 204431332 in words is "two hundred four million, four hundred thirty-one thousand, three hundred thirty-two".