3221131323131 has 4 divisors (see below), whose sum is σ = 3231422477832. Its totient is φ = 3210840168432.

The previous prime is 3221131323097. The next prime is 3221131323169. The reversal of 3221131323131 is 1313231311223.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3221131323131 - 2²² = 3221127128827 is a prime.

It is a super-2 number, since 2×3221131323131² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3221131323131.

It is not an unprimeable number, because it can be changed into a prime (3221131323181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5145576881 + ... + 5145577506.

It is an arithmetic number, because the mean of its divisors is an integer number (807855619458).

Almost surely, 2^{3221131323131} is an apocalyptic number.

3221131323131 is a deficient number, since it is larger than the sum of its proper divisors (10291154701).

3221131323131 is a wasteful number, since it uses less digits than its factorization.

3221131323131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10291154700.

The product of its digits is 1944, while the sum is 26.

Adding to 3221131323131 its reverse (1313231311223), we get a palindrome (4534362634354).

The spelling of 3221131323131 in words is "three trillion, two hundred twenty-one billion, one hundred thirty-one million, three hundred twenty-three thousand, one hundred thirty-one".