204231143009 has 2 divisors, whose sum is σ = 204231143010. Its totient is φ = 204231143008.

The previous prime is 204231142981. The next prime is 204231143021. The reversal of 204231143009 is 900341132402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 177264576784 + 26966566225 = 421028^2 + 164215^2 .

It is a cyclic number.

It is not a de Polignac number, because 204231143009 - 2²⁴ = 204214365793 is a prime.

It is not a weakly prime, because it can be changed into another prime (204231193009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102115571504 + 102115571505.

It is an arithmetic number, because the mean of its divisors is an integer number (102115571505).

Almost surely, 2^204231143009 is an apocalyptic number.

It is an amenable number.

204231143009 is a deficient number, since it is larger than the sum of its proper divisors (1).

204231143009 is an equidigital number, since it uses as much as digits as its factorization.

204231143009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 29.

The spelling of 204231143009 in words is "two hundred four billion, two hundred thirty-one million, one hundred forty-three thousand, nine".