2131011405 has 48 divisors (see below), whose sum is σ = 3910907520. Its totient is φ = 1070423424.

The previous prime is 2131011391. The next prime is 2131011419. The reversal of 2131011405 is 5041101312.

It is an interprime number because it is at equal distance from previous prime (2131011391) and next prime (2131011419).

It is not a de Polignac number, because 2131011405 - 2⁷ = 2131011277 is a prime.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 140712 + ... + 155118.

It is an arithmetic number, because the mean of its divisors is an integer number (81477240).

Almost surely, 2^2131011405 is an apocalyptic number.

It is an amenable number.

2131011405 is a deficient number, since it is larger than the sum of its proper divisors (1779896115).

2131011405 is a wasteful number, since it uses less digits than its factorization.

2131011405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14610 (or 14607 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 2131011405 is about 46162.8790804906. The cubic root of 2131011405 is about 1286.8519688540.

Adding to 2131011405 its reverse (5041101312), we get a palindrome (7172112717).

The spelling of 2131011405 in words is "two billion, one hundred thirty-one million, eleven thousand, four hundred five".