2003523011 has 4 divisors (see below), whose sum is σ = 2289740592. Its totient is φ = 1717305432.

The previous prime is 2003522993. The next prime is 2003523047. The reversal of 2003523011 is 1103253002.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1103253002 = 2 ⋅551626501.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2003523011 is a prime.

It is a super-2 number, since 2×2003523011² = 8028208911213012242, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2003123011) 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, 143108780 + ... + 143108793.

It is an arithmetic number, because the mean of its divisors is an integer number (572435148).

Almost surely, 2^2003523011 is an apocalyptic number.

2003523011 is a deficient number, since it is larger than the sum of its proper divisors (286217581).

2003523011 is an equidigital number, since it uses as much as digits as its factorization.

2003523011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286217580.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 2003523011 is about 44760.7306799163. The cubic root of 2003523011 is about 1260.6604018934.

Adding to 2003523011 its reverse (1103253002), we get a palindrome (3106776013).

The spelling of 2003523011 in words is "two billion, three million, five hundred twenty-three thousand, eleven".