2131131444 has 48 divisors (see below), whose sum is σ = 5435105088. Its totient is φ = 645942528.

The previous prime is 2131131437. The next prime is 2131131451. The reversal of 2131131444 is 4441311312.

It is an interprime number because it is at equal distance from previous prime (2131131437) and next prime (2131131451).

It is a nude number because it is divisible by every one of its digits.

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 15 ways as a sum of consecutive naturals, for example, 91497 + ... + 112400.

It is an arithmetic number, because the mean of its divisors is an integer number (113231356).

Almost surely, 2^2131131444 is an apocalyptic number.

It is an amenable number.

2131131444 is an abundant number, since it is smaller than the sum of its proper divisors (3303973644).

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

2131131444 is a wasteful number, since it uses less digits than its factorization.

2131131444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 203984 (or 203982 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 2131131444 is about 46164.1792302213. The cubic root of 2131131444 is about 1286.8761310152.

Adding to 2131131444 its reverse (4441311312), we get a palindrome (6572442756).

The spelling of 2131131444 in words is "two billion, one hundred thirty-one million, one hundred thirty-one thousand, four hundred forty-four".