204331130309 has 2 divisors, whose sum is σ = 204331130310. Its totient is φ = 204331130308.

The previous prime is 204331130303. The next prime is 204331130329. The reversal of 204331130309 is 903031133402.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 204331120900 + 9409 = 452030^2 + 97^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204331130309 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (204331130303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102165565154 + 102165565155.

It is an arithmetic number, because the mean of its divisors is an integer number (102165565155).

Almost surely, 2^204331130309 is an apocalyptic number.

It is an amenable number.

204331130309 is a deficient number, since it is larger than the sum of its proper divisors (1).

204331130309 is an equidigital number, since it uses as much as digits as its factorization.

204331130309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5832, while the sum is 29.

The spelling of 204331130309 in words is "two hundred four billion, three hundred thirty-one million, one hundred thirty thousand, three hundred nine".