3231130021 has 12 divisors (see below), whose sum is σ = 3760439340. Its totient is φ = 2768230080.

The previous prime is 3231130013. The next prime is 3231130061. The reversal of 3231130021 is 1200311323.

It can be written as a sum of positive squares in 2 ways, for example, as 2831729796 + 399400225 = 53214^2 + 19985^2 .

It is not a de Polignac number, because 3231130021 - 2³ = 3231130013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3231129977 and 3231130004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3231130061) 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 11 ways as a sum of consecutive naturals, for example, 97315 + ... + 126223.

It is an arithmetic number, because the mean of its divisors is an integer number (313369945).

Almost surely, 2^3231130021 is an apocalyptic number.

It is an amenable number.

3231130021 is a deficient number, since it is larger than the sum of its proper divisors (529309319).

3231130021 is a wasteful number, since it uses less digits than its factorization.

3231130021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31204 (or 31197 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 16.

The square root of 3231130021 is about 56843.0296606365. The cubic root of 3231130021 is about 1478.3756864521.

Adding to 3231130021 its reverse (1200311323), we get a palindrome (4431441344).

The spelling of 3231130021 in words is "three billion, two hundred thirty-one million, one hundred thirty thousand, twenty-one".