3240131321 has 16 divisors (see below), whose sum is σ = 3789926400. Its totient is φ = 2768915520.

The previous prime is 3240131317. The next prime is 3240131381. The reversal of 3240131321 is 1231310423.

It is not a de Polignac number, because 3240131321 - 2² = 3240131317 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3240131293 and 3240131302.

It is not an unprimeable number, because it can be changed into a prime (3240131311) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 101576 + ... + 129606.

It is an arithmetic number, because the mean of its divisors is an integer number (236870400).

Almost surely, 2^3240131321 is an apocalyptic number.

It is an amenable number.

3240131321 is a deficient number, since it is larger than the sum of its proper divisors (549795079).

3240131321 is an equidigital number, since it uses as much as digits as its factorization.

3240131321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28389 (or 28375 counting only the distinct ones).

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

The square root of 3240131321 is about 56922.1514087442. The cubic root of 3240131321 is about 1479.7472360218.

Adding to 3240131321 its reverse (1231310423), we get a palindrome (4471441744).

The spelling of 3240131321 in words is "three billion, two hundred forty million, one hundred thirty-one thousand, three hundred twenty-one".