2003000203123 has 4 divisors (see below), whose sum is σ = 2003844996808. Its totient is φ = 2002155409440.

The previous prime is 2003000203121. The next prime is 2003000203147. The reversal of 2003000203123 is 3213020003002.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2003000203123 - 2¹ = 2003000203121 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2003000203097 and 2003000203106.

It is not an unprimeable number, because it can be changed into a prime (2003000203121) 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 in 3 ways as a sum of consecutive naturals, for example, 422393286 + ... + 422398027.

It is an arithmetic number, because the mean of its divisors is an integer number (500961249202).

Almost surely, 2^{2003000203123} is an apocalyptic number.

2003000203123 is a deficient number, since it is larger than the sum of its proper divisors (844793685).

2003000203123 is an equidigital number, since it uses as much as digits as its factorization.

2003000203123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 844793684.

The product of its (nonzero) digits is 216, while the sum is 16.

Adding to 2003000203123 its reverse (3213020003002), we get a palindrome (5216020206125).

The spelling of 2003000203123 in words is "two trillion, three billion, two hundred three thousand, one hundred twenty-three".