3121321311131 has 8 divisors (see below), whose sum is σ = 3218530003920. Its totient is φ = 3025531723552.

The previous prime is 3121321311089. The next prime is 3121321311181. The reversal of 3121321311131 is 1311131231213.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3121321311131 is a prime.

It is a super-2 number, since 2×3121321311131² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3121321311097 and 3121321311106.

It is not an unprimeable number, because it can be changed into a prime (3121321311181) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 354771836 + ... + 354780633.

It is an arithmetic number, because the mean of its divisors is an integer number (402316250490).

Almost surely, 2^{3121321311131} is an apocalyptic number.

3121321311131 is a deficient number, since it is larger than the sum of its proper divisors (97208692789).

3121321311131 is an equidigital number, since it uses as much as digits as its factorization.

3121321311131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 709552605.

The product of its digits is 324, while the sum is 23.

Adding to 3121321311131 its reverse (1311131231213), we get a palindrome (4432452542344).

The spelling of 3121321311131 in words is "three trillion, one hundred twenty-one billion, three hundred twenty-one million, three hundred eleven thousand, one hundred thirty-one".