3220131321 has 16 divisors (see below), whose sum is σ = 5204253120. Its totient is φ = 1951594560.

The previous prime is 3220131311. The next prime is 3220131337. The reversal of 3220131321 is 1231310223.

It is not a de Polignac number, because 3220131321 - 2⁷ = 3220131193 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 3220131294 and 3220131303.

It is not an unprimeable number, because it can be changed into a prime (3220131311) 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, 5420800 + ... + 5421393.

It is an arithmetic number, because the mean of its divisors is an integer number (325265820).

Almost surely, 2^3220131321 is an apocalyptic number.

It is an amenable number.

3220131321 is a deficient number, since it is larger than the sum of its proper divisors (1984121799).

3220131321 is a wasteful number, since it uses less digits than its factorization.

3220131321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10842213 (or 10842207 counting only the distinct ones).

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

The square root of 3220131321 is about 56746.2009389175. The cubic root of 3220131321 is about 1476.6963260494.

Adding to 3220131321 its reverse (1231310223), we get a palindrome (4451441544).

The spelling of 3220131321 in words is "three billion, two hundred twenty million, one hundred thirty-one thousand, three hundred twenty-one".