2131132444 has 48 divisors (see below), whose sum is σ = 4541890752. Its totient is φ = 854111232.

The previous prime is 2131132433. The next prime is 2131132453. The reversal of 2131132444 is 4442311312.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60474 + ... + 88990.

It is an arithmetic number, because the mean of its divisors is an integer number (94622724).

Almost surely, 2^2131132444 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2131132444, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2270945376).

2131132444 is an abundant number, since it is smaller than the sum of its proper divisors (2410758308).

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

2131132444 is a wasteful number, since it uses less digits than its factorization.

2131132444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28702 (or 28700 counting only the distinct ones).

The product of its digits is 2304, while the sum is 25.

The square root of 2131132444 is about 46164.1900611286. The cubic root of 2131132444 is about 1286.8763322973.

Adding to 2131132444 its reverse (4442311312), we get a palindrome (6573443756).

The spelling of 2131132444 in words is "two billion, one hundred thirty-one million, one hundred thirty-two thousand, four hundred forty-four".