3111113111 has 2 divisors, whose sum is σ = 3111113112. Its totient is φ = 3111113110.

The previous prime is 3111113077. The next prime is 3111113119. The reversal of 3111113111 is 1113111113.

It is a strong prime.

It is an emirp because it is prime and its reverse (1113111113) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3111113111 - 2¹⁰ = 3111112087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3111113119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1555556555 + 1555556556.

It is an arithmetic number, because the mean of its divisors is an integer number (1555556556).

Almost surely, 2^3111113111 is an apocalyptic number.

3111113111 is a deficient number, since it is larger than the sum of its proper divisors (1).

3111113111 is an equidigital number, since it uses as much as digits as its factorization.

3111113111 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9, while the sum is 14.

The square root of 3111113111 is about 55777.3530297019. The cubic root of 3111113111 is about 1459.8400261013.

Adding to 3111113111 its reverse (1113111113), we get a palindrome (4224224224).

It can be divided in two parts, 3111113 and 111, that multiplied together give a palindrome (345333543).

The spelling of 3111113111 in words is "three billion, one hundred eleven million, one hundred thirteen thousand, one hundred eleven".