2131231232 has 80 divisors (see below), whose sum is σ = 4634541912. Its totient is φ = 973209600.

The previous prime is 2131231229. The next prime is 2131231241. The reversal of 2131231232 is 2321321312.

It can be written as a sum of positive squares in 4 ways, for example, as 1097994496 + 1033236736 = 33136^2 + 32144^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 643982 + ... + 647282.

Almost surely, 2^2131231232 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 2131231232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2317270956).

2131231232 is an abundant number, since it is smaller than the sum of its proper divisors (2503310680).

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

2131231232 is an equidigital number, since it uses as much as digits as its factorization.

2131231232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3429 (or 3413 counting only the distinct ones).

The product of its digits is 432, while the sum is 20.

The square root of 2131231232 is about 46165.2600122646. The cubic root of 2131231232 is about 1286.8962162445.

Adding to 2131231232 its reverse (2321321312), we get a palindrome (4452552544).

The spelling of 2131231232 in words is "two billion, one hundred thirty-one million, two hundred thirty-one thousand, two hundred thirty-two".