2131031232 has 168 divisors, whose sum is σ = 6690829392. Its totient is φ = 643123200.

The previous prime is 2131031197. The next prime is 2131031237. The reversal of 2131031232 is 2321301312.

It is a super-2 number, since 2×2131031232² = 9082588223518875648, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2131031237) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2007982 + ... + 2009042.

Almost surely, 2^2131031232 is an apocalyptic number.

2131031232 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2131031232, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3345414696).

2131031232 is an abundant number, since it is smaller than the sum of its proper divisors (4559798160).

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

2131031232 is a wasteful number, since it uses less digits than its factorization.

2131031232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1407 (or 1394 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

The square root of 2131031232 is about 46163.0938304616. The cubic root of 2131031232 is about 1286.8559598126.

Adding to 2131031232 its reverse (2321301312), we get a palindrome (4452332544).

The spelling of 2131031232 in words is "two billion, one hundred thirty-one million, thirty-one thousand, two hundred thirty-two".