2011131403 has 4 divisors (see below), whose sum is σ = 2014319248. Its totient is φ = 2007943560.

The previous prime is 2011131389. The next prime is 2011131443. The reversal of 2011131403 is 3041311102.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2011131403 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2011131443) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1592976 + ... + 1594237.

It is an arithmetic number, because the mean of its divisors is an integer number (503579812).

Almost surely, 2^2011131403 is an apocalyptic number.

2011131403 is a deficient number, since it is larger than the sum of its proper divisors (3187845).

2011131403 is an equidigital number, since it uses as much as digits as its factorization.

2011131403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3187844.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 2011131403 is about 44845.6397323084. The cubic root of 2011131403 is about 1262.2541749003.

Adding to 2011131403 its reverse (3041311102), we get a palindrome (5052442505).

The spelling of 2011131403 in words is "two billion, eleven million, one hundred thirty-one thousand, four hundred three".