3121113611213 has 12 divisors (see below), whose sum is σ = 3451575227328. Its totient is φ = 2819729474640.

The previous prime is 3121113611201. The next prime is 3121113611221. The reversal of 3121113611213 is 3121163111213.

It is not a de Polignac number, because 3121113611213 - 2⁴ = 3121113611197 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3121113611243) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 196461503 + ... + 196477388.

It is an arithmetic number, because the mean of its divisors is an integer number (287631268944).

Almost surely, 2^{3121113611213} is an apocalyptic number.

It is an amenable number.

3121113611213 is a deficient number, since it is larger than the sum of its proper divisors (330461616115).

3121113611213 is a wasteful number, since it uses less digits than its factorization.

3121113611213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 392938964 (or 392938951 counting only the distinct ones).

The product of its digits is 648, while the sum is 26.

Adding to 3121113611213 its reverse (3121163111213), we get a palindrome (6242276722426).

The spelling of 3121113611213 in words is "three trillion, one hundred twenty-one billion, one hundred thirteen million, six hundred eleven thousand, two hundred thirteen".