312111333111 has 16 divisors (see below), whose sum is σ = 463818700800. Its totient is φ = 185527479168.

The previous prime is 312111333109. The next prime is 312111333167. The reversal of 312111333111 is 111333111213.

It is not a de Polignac number, because 312111333111 - 2¹ = 312111333109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312111333211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 161047191 + ... + 161049128.

It is an arithmetic number, because the mean of its divisors is an integer number (28988668800).

Almost surely, 2^312111333111 is an apocalyptic number.

312111333111 is a deficient number, since it is larger than the sum of its proper divisors (151707367689).

312111333111 is a wasteful number, since it uses less digits than its factorization.

312111333111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322096358.

The product of its digits is 162, while the sum is 21.

Adding to 312111333111 its reverse (111333111213), we get a palindrome (423444444324).

The spelling of 312111333111 in words is "three hundred twelve billion, one hundred eleven million, three hundred thirty-three thousand, one hundred eleven".