111313031211 has 12 divisors (see below), whose sum is σ = 165131043792. Its totient is φ = 72203047056.

The previous prime is 111313031197. The next prime is 111313031227. The reversal of 111313031211 is 112130313111.

111313031211 is a `hidden beast` number, since 111 + 313 + 0 + 31 + 211 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-111313031211 is a prime.

It is not an unprimeable number, because it can be changed into a prime (111313031911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 167136351 + ... + 167137016.

It is an arithmetic number, because the mean of its divisors is an integer number (13760920316).

Almost surely, 2^111313031211 is an apocalyptic number.

111313031211 is a deficient number, since it is larger than the sum of its proper divisors (53818012581).

111313031211 is a wasteful number, since it uses less digits than its factorization.

111313031211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334273410 (or 334273407 counting only the distinct ones).

The product of its (nonzero) digits is 54, while the sum is 18.

Adding to 111313031211 its reverse (112130313111), we get a palindrome (223443344322).

The spelling of 111313031211 in words is "one hundred eleven billion, three hundred thirteen million, thirty-one thousand, two hundred eleven".