312112023111 has 24 divisors (see below), whose sum is σ = 517674428544. Its totient is φ = 177504460560.

The previous prime is 312112023109. The next prime is 312112023127. The reversal of 312112023111 is 111320211213.

312112023111 is a `hidden beast` number, since 312 + 1 + 120 + 231 + 1 + 1 = 666.

It is not a de Polignac number, because 312112023111 - 2¹ = 312112023109 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (312112023161) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11726421 + ... + 11753006.

It is an arithmetic number, because the mean of its divisors is an integer number (21569767856).

Almost surely, 2^312112023111 is an apocalyptic number.

312112023111 is a deficient number, since it is larger than the sum of its proper divisors (205562405433).

312112023111 is a wasteful number, since it uses less digits than its factorization.

312112023111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23479651 (or 23479648 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 18.

Adding to 312112023111 its reverse (111320211213), we get a palindrome (423432234324).

The spelling of 312112023111 in words is "three hundred twelve billion, one hundred twelve million, twenty-three thousand, one hundred eleven".