204985331 has 2 divisors, whose sum is σ = 204985332. Its totient is φ = 204985330.

The previous prime is 204985327. The next prime is 204985367. The reversal of 204985331 is 133589402.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 204985331 - 2² = 204985327 is a prime.

It is a super-2 number, since 2×204985331² = 84037971850359122, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 204985291 and 204985300.

It is not a weakly prime, because it can be changed into another prime (204985531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102492665 + 102492666.

It is an arithmetic number, because the mean of its divisors is an integer number (102492666).

Almost surely, 2^204985331 is an apocalyptic number.

204985331 is a deficient number, since it is larger than the sum of its proper divisors (1).

204985331 is an equidigital number, since it uses as much as digits as its factorization.

204985331 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 204985331 is about 14317.3087904117. The cubic root of 204985331 is about 589.6227896242.

The spelling of 204985331 in words is "two hundred four million, nine hundred eighty-five thousand, three hundred thirty-one".