2131032321 has 40 divisors (see below), whose sum is σ = 3538396224. Its totient is φ = 1267138080.

The previous prime is 2131032307. The next prime is 2131032373. The reversal of 2131032321 is 1232301312.

2131032321 is a `hidden beast` number, since 2 + 1 + 310 + 32 + 321 = 666.

It is not a de Polignac number, because 2131032321 - 2⁷ = 2131032193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2131032294 and 2131032303.

It is not an unprimeable number, because it can be changed into a prime (2131031321) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 24660 + ... + 69786.

Almost surely, 2^2131032321 is an apocalyptic number.

It is an amenable number.

2131032321 is a deficient number, since it is larger than the sum of its proper divisors (1407363903).

2131032321 is a wasteful number, since it uses less digits than its factorization.

2131032321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45203 (or 45194 counting only the distinct ones).

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

The square root of 2131032321 is about 46163.1056255967. The cubic root of 2131032321 is about 1286.8561790157.

Adding to 2131032321 its reverse (1232301312), we get a palindrome (3363333633).

The spelling of 2131032321 in words is "two billion, one hundred thirty-one million, thirty-two thousand, three hundred twenty-one".