2131806411 has 32 divisors (see below), whose sum is σ = 3611558400. Its totient is φ = 1217449440.

The previous prime is 2131806377. The next prime is 2131806431. The reversal of 2131806411 is 1146081312.

It is a happy number.

2131806411 is a `hidden beast` number, since 2 + 1 + 3 + 18 + 0 + 641 + 1 = 666.

It is not a de Polignac number, because 2131806411 - 2¹⁰ = 2131805387 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2131806431) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 614221 + ... + 617681.

It is an arithmetic number, because the mean of its divisors is an integer number (112861200).

Almost surely, 2^2131806411 is an apocalyptic number.

2131806411 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2131806411 is a deficient number, since it is larger than the sum of its proper divisors (1479751989).

2131806411 is a wasteful number, since it uses less digits than its factorization.

2131806411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6736 (or 6730 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 27.

The square root of 2131806411 is about 46171.4891572711. The cubic root of 2131806411 is about 1287.0119754810.

Adding to 2131806411 its reverse (1146081312), we get a palindrome (3277887723).

The spelling of 2131806411 in words is "two billion, one hundred thirty-one million, eight hundred six thousand, four hundred eleven".