203123049859 has 2 divisors, whose sum is σ = 203123049860. Its totient is φ = 203123049858.

The previous prime is 203123049853. The next prime is 203123049869. The reversal of 203123049859 is 958940321302.

203123049859 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 is a cyclic number.

It is not a de Polignac number, because 203123049859 - 2⁹ = 203123049347 is a prime.

It is not a weakly prime, because it can be changed into another prime (203123049853) 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, 101561524929 + 101561524930.

It is an arithmetic number, because the mean of its divisors is an integer number (101561524930).

Almost surely, 2^203123049859 is an apocalyptic number.

203123049859 is a deficient number, since it is larger than the sum of its proper divisors (1).

203123049859 is an equidigital number, since it uses as much as digits as its factorization.

203123049859 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 46.

The spelling of 203123049859 in words is "two hundred three billion, one hundred twenty-three million, forty-nine thousand, eight hundred fifty-nine".