204432431 has 4 divisors (see below), whose sum is σ = 233637072. Its totient is φ = 175227792.

The previous prime is 204432413. The next prime is 204432433. The reversal of 204432431 is 134234402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 204432431 - 2⁶ = 204432367 is a prime.

It is a super-2 number, since 2×204432431² = 83585237689139522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204432397 and 204432406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204432433) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14602310 + ... + 14602323.

It is an arithmetic number, because the mean of its divisors is an integer number (58409268).

Almost surely, 2^204432431 is an apocalyptic number.

204432431 is a deficient number, since it is larger than the sum of its proper divisors (29204641).

204432431 is an equidigital number, since it uses as much as digits as its factorization.

204432431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29204640.

The product of its (nonzero) digits is 2304, while the sum is 23.

The square root of 204432431 is about 14297.9869562117. The cubic root of 204432431 is about 589.0921890784.

Adding to 204432431 its reverse (134234402), we get a palindrome (338666833).

The spelling of 204432431 in words is "two hundred four million, four hundred thirty-two thousand, four hundred thirty-one".