2003121329 has 4 divisors (see below), whose sum is σ = 2185223280. Its totient is φ = 1821019380.

The previous prime is 2003121319. The next prime is 2003121349. The reversal of 2003121329 is 9231213002.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2003121329 - 2²⁰ = 2002072753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2003121319) 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, 91050959 + ... + 91050980.

It is an arithmetic number, because the mean of its divisors is an integer number (546305820).

Almost surely, 2^2003121329 is an apocalyptic number.

It is an amenable number.

2003121329 is a deficient number, since it is larger than the sum of its proper divisors (182101951).

2003121329 is a wasteful number, since it uses less digits than its factorization.

2003121329 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 182101950.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 2003121329 is about 44756.2434639012. The cubic root of 2003121329 is about 1260.5761472357.

The spelling of 2003121329 in words is "two billion, three million, one hundred twenty-one thousand, three hundred twenty-nine".