2003013013123 has 4 divisors (see below), whose sum is σ = 2003918127408. Its totient is φ = 2002107898840.

The previous prime is 2003013013121. The next prime is 2003013013129. The reversal of 2003013013123 is 3213103103002.

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 2003013013123 - 2¹ = 2003013013121 is a prime.

It is a super-2 number, since 2×2003013013123² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2003013013123.

It is not an unprimeable number, because it can be changed into a prime (2003013013121) 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 3 ways as a sum of consecutive naturals, for example, 452553823 + ... + 452558248.

It is an arithmetic number, because the mean of its divisors is an integer number (500979531852).

Almost surely, 2^{2003013013123} is an apocalyptic number.

2003013013123 is a deficient number, since it is larger than the sum of its proper divisors (905114285).

2003013013123 is an equidigital number, since it uses as much as digits as its factorization.

2003013013123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905114284.

The product of its (nonzero) digits is 324, while the sum is 19.

Adding to 2003013013123 its reverse (3213103103002), we get a palindrome (5216116116125).

The spelling of 2003013013123 in words is "two trillion, three billion, thirteen million, thirteen thousand, one hundred twenty-three".