3111111133213 has 2 divisors, whose sum is σ = 3111111133214. Its totient is φ = 3111111133212.

The previous prime is 3111111133183. The next prime is 3111111133259. The reversal of 3111111133213 is 3123311111113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3109163411524 + 1947721689 = 1763282^2 + 44133^2 .

It is an emirp because it is prime and its reverse (3123311111113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3111111133213 - 2³⁷ = 2973672179741 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3111111133283) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1555555566606 + 1555555566607.

It is an arithmetic number, because the mean of its divisors is an integer number (1555555566607).

Almost surely, 2^{3111111133213} is an apocalyptic number.

It is an amenable number.

3111111133213 is a deficient number, since it is larger than the sum of its proper divisors (1).

3111111133213 is an equidigital number, since it uses as much as digits as its factorization.

3111111133213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 162, while the sum is 22.

Adding to 3111111133213 its reverse (3123311111113), we get a palindrome (6234422244326).

The spelling of 3111111133213 in words is "three trillion, one hundred eleven billion, one hundred eleven million, one hundred thirty-three thousand, two hundred thirteen".