2003011123 has 4 divisors (see below), whose sum is σ = 2003133168. Its totient is φ = 2002889080.

The previous prime is 2003011117. The next prime is 2003011133. The reversal of 2003011123 is 3211103002.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2003011123 is a prime.

It is a super-3 number, since 3×2003011123³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2003011133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31711 + ... + 70792.

It is an arithmetic number, because the mean of its divisors is an integer number (500783292).

Almost surely, 2^2003011123 is an apocalyptic number.

2003011123 is a deficient number, since it is larger than the sum of its proper divisors (122045).

2003011123 is a wasteful number, since it uses less digits than its factorization.

2003011123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122044.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 2003011123 is about 44755.0122667842. The cubic root of 2003011123 is about 1260.5530290483.

Adding to 2003011123 its reverse (3211103002), we get a palindrome (5214114125).

The spelling of 2003011123 in words is "two billion, three million, eleven thousand, one hundred twenty-three".