2131443810 has 96 divisors (see below), whose sum is σ = 5799755520. Its totient is φ = 542070144.

The previous prime is 2131443767. The next prime is 2131443817. The reversal of 2131443810 is 183441312.

2131443810 is a `hidden beast` number, since 213 + 1 + 4 + 438 + 10 = 666.

It is a super-2 number, since 2×2131443810² = 9086105430374632200, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (2131443817) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 803907 + ... + 806553.

It is an arithmetic number, because the mean of its divisors is an integer number (60414120).

Almost surely, 2^2131443810 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2131443810, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2899877760).

2131443810 is an abundant number, since it is smaller than the sum of its proper divisors (3668311710).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2131443810 is a wasteful number, since it uses less digits than its factorization.

2131443810 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3072 (or 3069 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 27.

The square root of 2131443810 is about 46167.5623138151. The cubic root of 2131443810 is about 1286.9390016424.

The spelling of 2131443810 in words is "two billion, one hundred thirty-one million, four hundred forty-three thousand, eight hundred ten".