204427231 has 2 divisors, whose sum is σ = 204427232. Its totient is φ = 204427230.

The previous prime is 204427217. The next prime is 204427253. The reversal of 204427231 is 132724402.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204427231 - 2¹¹ = 204425183 is a prime.

It is a super-2 number, since 2×204427231² = 83580985548654722, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 204427196 and 204427205.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204427291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102213615 + 102213616.

It is an arithmetic number, because the mean of its divisors is an integer number (102213616).

Almost surely, 2^204427231 is an apocalyptic number.

204427231 is a deficient number, since it is larger than the sum of its proper divisors (1).

204427231 is an equidigital number, since it uses as much as digits as its factorization.

204427231 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2688, while the sum is 25.

The square root of 204427231 is about 14297.8051112749. The cubic root of 204427231 is about 589.0871942653.

The spelling of 204427231 in words is "two hundred four million, four hundred twenty-seven thousand, two hundred thirty-one".