204204431 has 2 divisors, whose sum is σ = 204204432. Its totient is φ = 204204430.

The previous prime is 204204421. The next prime is 204204439. The reversal of 204204431 is 134402402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204204431 - 2⁶ = 204204367 is a prime.

It is a super-2 number, since 2×204204431² = 83398899280067522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204204439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102102215 + 102102216.

It is an arithmetic number, because the mean of its divisors is an integer number (102102216).

Almost surely, 2^204204431 is an apocalyptic number.

204204431 is a deficient number, since it is larger than the sum of its proper divisors (1).

204204431 is an equidigital number, since it uses as much as digits as its factorization.

204204431 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 204204431 is about 14290.0115815208. The cubic root of 204204431 is about 588.8731061247.

Adding to 204204431 its reverse (134402402), we get a palindrome (338606833).

The spelling of 204204431 in words is "two hundred four million, two hundred four thousand, four hundred thirty-one".