203123004109 has 8 divisors (see below), whose sum is σ = 210270136320. Its totient is φ = 195985398000.

The previous prime is 203123004031. The next prime is 203123004127. The reversal of 203123004109 is 901400321302.

203123004109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 203123004109 - 2⁷ = 203123003981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (203123004199) 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 in 7 ways as a sum of consecutive naturals, for example, 2338117 + ... + 2423434.

It is an arithmetic number, because the mean of its divisors is an integer number (26283767040).

Almost surely, 2^203123004109 is an apocalyptic number.

203123004109 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

It is an amenable number.

203123004109 is a deficient number, since it is larger than the sum of its proper divisors (7147132211).

203123004109 is a wasteful number, since it uses less digits than its factorization.

203123004109 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4763051.

The product of its (nonzero) digits is 1296, while the sum is 25.

The spelling of 203123004109 in words is "two hundred three billion, one hundred twenty-three million, four thousand, one hundred nine".