2001511203 has 16 divisors (see below), whose sum is σ = 2693230080. Its totient is φ = 1322114976.

The previous prime is 2001511159. The next prime is 2001511207. The reversal of 2001511203 is 3021151002.

It is not a de Polignac number, because 2001511203 - 2⁶ = 2001511139 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2001511207) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167068 + ... + 178646.

It is an arithmetic number, because the mean of its divisors is an integer number (168326880).

Almost surely, 2^2001511203 is an apocalyptic number.

2001511203 is a deficient number, since it is larger than the sum of its proper divisors (691718877).

2001511203 is a wasteful number, since it uses less digits than its factorization.

2001511203 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12106.

The product of its (nonzero) digits is 60, while the sum is 15.

The square root of 2001511203 is about 44738.2521227640. The cubic root of 2001511203 is about 1260.2383027478.

Adding to 2001511203 its reverse (3021151002), we get a palindrome (5022662205).

The spelling of 2001511203 in words is "two billion, one million, five hundred eleven thousand, two hundred three".