2003431131 has 16 divisors (see below), whose sum is σ = 3196357920. Its totient is φ = 1232880480.

The previous prime is 2003431109. The next prime is 2003431151. The reversal of 2003431131 is 1311343002.

2003431131 is a `hidden beast` number, since 200 + 3 + 431 + 1 + 31 = 666.

It is not a de Polignac number, because 2003431131 - 2⁹ = 2003430619 is a prime.

It is a super-2 number, since 2×2003431131² = 8027472593319878322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2003431151) 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, 2853540 + ... + 2854241.

It is an arithmetic number, because the mean of its divisors is an integer number (199772370).

Almost surely, 2^2003431131 is an apocalyptic number.

2003431131 is a deficient number, since it is larger than the sum of its proper divisors (1192926789).

2003431131 is a wasteful number, since it uses less digits than its factorization.

2003431131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5707803 (or 5707797 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2003431131 is about 44759.7043220797. The cubic root of 2003431131 is about 1260.6411306318.

Adding to 2003431131 its reverse (1311343002), we get a palindrome (3314774133).

The spelling of 2003431131 in words is "two billion, three million, four hundred thirty-one thousand, one hundred thirty-one".