2003111231001 has 16 divisors (see below), whose sum is σ = 2763043772160. Its totient is φ = 1289297479680.

The previous prime is 2003111230963. The next prime is 2003111231041. The reversal of 2003111231001 is 1001321113002.

It is a happy number.

It is not a de Polignac number, because 2003111231001 - 2³¹ = 2000963747353 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2003111231041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1322841 + ... + 2399193.

It is an arithmetic number, because the mean of its divisors is an integer number (172690235760).

Almost surely, 2^{2003111231001} is an apocalyptic number.

It is an amenable number.

2003111231001 is a deficient number, since it is larger than the sum of its proper divisors (759932541159).

2003111231001 is a wasteful number, since it uses less digits than its factorization.

2003111231001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1097776.

The product of its (nonzero) digits is 36, while the sum is 15.

Adding to 2003111231001 its reverse (1001321113002), we get a palindrome (3004432344003).

The spelling of 2003111231001 in words is "two trillion, three billion, one hundred eleven million, two hundred thirty-one thousand, one".