3111216979613 has 2 divisors, whose sum is σ = 3111216979614. Its totient is φ = 3111216979612.

The previous prime is 3111216979597. The next prime is 3111216979681. The reversal of 3111216979613 is 3169796121113.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2990281353049 + 120935626564 = 1729243^2 + 347758^2 .

It is a cyclic number.

It is not a de Polignac number, because 3111216979613 - 2⁴ = 3111216979597 is a prime.

It is a super-3 number, since 3×3111216979613³ (a number of 38 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3111216970613) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1555608489806 + 1555608489807.

It is an arithmetic number, because the mean of its divisors is an integer number (1555608489807).

Almost surely, 2^{3111216979613} is an apocalyptic number.

It is an amenable number.

3111216979613 is a deficient number, since it is larger than the sum of its proper divisors (1).

3111216979613 is an equidigital number, since it uses as much as digits as its factorization.

3111216979613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 367416, while the sum is 50.

The spelling of 3111216979613 in words is "three trillion, one hundred eleven billion, two hundred sixteen million, nine hundred seventy-nine thousand, six hundred thirteen".