203011209923 has 2 divisors, whose sum is σ = 203011209924. Its totient is φ = 203011209922.

The previous prime is 203011209859. The next prime is 203011210097. The reversal of 203011209923 is 329902110302.

203011209923 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 203011209923 - 2⁶ = 203011209859 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 203011209923.

It is not a weakly prime, because it can be changed into another prime (203011209523) 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, 101505604961 + 101505604962.

It is an arithmetic number, because the mean of its divisors is an integer number (101505604962).

Almost surely, 2^203011209923 is an apocalyptic number.

203011209923 is a deficient number, since it is larger than the sum of its proper divisors (1).

203011209923 is an equidigital number, since it uses as much as digits as its factorization.

203011209923 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 32.

The spelling of 203011209923 in words is "two hundred three billion, eleven million, two hundred nine thousand, nine hundred twenty-three".