3111113311111 has 4 divisors (see below), whose sum is σ = 3350429719672. Its totient is φ = 2871796902552.

The previous prime is 3111113311079. The next prime is 3111113311123. The reversal of 3111113311111 is 1111133111113.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 3111113311111 - 2⁵ = 3111113311079 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 (3111113311181) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119658204261 + ... + 119658204286.

It is an arithmetic number, because the mean of its divisors is an integer number (837607429918).

Almost surely, 2^{3111113311111} is an apocalyptic number.

3111113311111 is a deficient number, since it is larger than the sum of its proper divisors (239316408561).

3111113311111 is a wasteful number, since it uses less digits than its factorization.

3111113311111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239316408560.

The product of its digits is 27, while the sum is 19.

Adding to 3111113311111 its reverse (1111133111113), we get a palindrome (4222246422224).

It can be divided in two parts, 3 and 111113311111, that multiplied together give a palindrome (333339933333).

The spelling of 3111113311111 in words is "three trillion, one hundred eleven billion, one hundred thirteen million, three hundred eleven thousand, one hundred eleven".