203234052809 has 2 divisors, whose sum is σ = 203234052810. Its totient is φ = 203234052808.

The previous prime is 203234052799. The next prime is 203234052821. The reversal of 203234052809 is 908250432302.

203234052809 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 203088126409 + 145926400 = 450653^2 + 12080^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-203234052809 is a prime.

It is a super-3 number, since 3×203234052809³ (a number of 35 digits) contains 333 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (203234052839) 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, 101617026404 + 101617026405.

It is an arithmetic number, because the mean of its divisors is an integer number (101617026405).

Almost surely, 2^203234052809 is an apocalyptic number.

It is an amenable number.

203234052809 is a deficient number, since it is larger than the sum of its proper divisors (1).

203234052809 is an equidigital number, since it uses as much as digits as its factorization.

203234052809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 38.

The spelling of 203234052809 in words is "two hundred three billion, two hundred thirty-four million, fifty-two thousand, eight hundred nine".