2003213523 has 16 divisors (see below), whose sum is σ = 2748366720. Its totient is φ = 1297115904.

The previous prime is 2003213477. The next prime is 2003213551. The reversal of 2003213523 is 3253123002.

It is not a de Polignac number, because 2003213523 - 2⁹ = 2003213011 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2003213523.

It is not an unprimeable number, because it can be changed into a prime (2003213573) 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 15 ways as a sum of consecutive naturals, for example, 20286 + ... + 66467.

It is an arithmetic number, because the mean of its divisors is an integer number (171772920).

Almost surely, 2^2003213523 is an apocalyptic number.

2003213523 is a deficient number, since it is larger than the sum of its proper divisors (745153197).

2003213523 is a wasteful number, since it uses less digits than its factorization.

2003213523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86978.

The product of its (nonzero) digits is 1080, while the sum is 21.

The square root of 2003213523 is about 44757.2734089109. The cubic root of 2003213523 is about 1260.5954863496.

Adding to 2003213523 its reverse (3253123002), we get a palindrome (5256336525).

The spelling of 2003213523 in words is "two billion, three million, two hundred thirteen thousand, five hundred twenty-three".