2131031403 has 32 divisors (see below), whose sum is σ = 3213281280. Its totient is φ = 1395558720.

The previous prime is 2131031387. The next prime is 2131031411. The reversal of 2131031403 is 3041301312.

It is not a de Polignac number, because 2131031403 - 2⁴ = 2131031387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2131031803) 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 31 ways as a sum of consecutive naturals, for example, 516318 + ... + 520428.

It is an arithmetic number, because the mean of its divisors is an integer number (100415040).

Almost surely, 2^2131031403 is an apocalyptic number.

2131031403 is a deficient number, since it is larger than the sum of its proper divisors (1082249877).

2131031403 is a wasteful number, since it uses less digits than its factorization.

2131031403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4456 (or 4450 counting only the distinct ones).

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

The square root of 2131031403 is about 46163.0956825904. The cubic root of 2131031403 is about 1286.8559942329.

Adding to 2131031403 its reverse (3041301312), we get a palindrome (5172332715).

The spelling of 2131031403 in words is "two billion, one hundred thirty-one million, thirty-one thousand, four hundred three".