2131231180 has 48 divisors (see below), whose sum is σ = 5103393120. Its totient is φ = 740625408.

The previous prime is 2131231171. The next prime is 2131231181. The reversal of 2131231180 is 811321312.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2131231181) by changing a digit.

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, 236670 + ... + 245509.

It is an arithmetic number, because the mean of its divisors is an integer number (106320690).

Almost surely, 2^2131231180 is an apocalyptic number.

2131231180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2131231180 is an abundant number, since it is smaller than the sum of its proper divisors (2972161940).

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

2131231180 is a wasteful number, since it uses less digits than its factorization.

2131231180 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 482218 (or 482216 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 2131231180 is about 46165.2594490706. The cubic root of 2131231180 is about 1286.8962057781.

Adding to 2131231180 its reverse (811321312), we get a palindrome (2942552492).

The spelling of 2131231180 in words is "two billion, one hundred thirty-one million, two hundred thirty-one thousand, one hundred eighty".