311111113020111 has 24 divisors (see below), whose sum is σ = 466286220398544. Its totient is φ = 199721372060160.

The previous prime is 311111113020073. The next prime is 311111113020151. The reversal of 311111113020111 is 111020311111113.

It is a happy number.

311111113020111 is a `hidden beast` number, since 31 + 111 + 111 + 302 + 0 + 111 = 666.

It is not a de Polignac number, because 311111113020111 - 2⁷ = 311111113019983 is a prime.

It is a super-2 number, since 2×311111113020111² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (311111113020151) 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, 4815780105 + ... + 4815844706.

It is an arithmetic number, because the mean of its divisors is an integer number (19428592516606).

Almost surely, 2^{311111113020111} is an apocalyptic number.

311111113020111 is a deficient number, since it is larger than the sum of its proper divisors (155175107378433).

311111113020111 is a wasteful number, since it uses less digits than its factorization.

311111113020111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9631624951 (or 9631624948 counting only the distinct ones).

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

Adding to 311111113020111 its reverse (111020311111113), we get a palindrome (422131424131224).

The spelling of 311111113020111 in words is "three hundred eleven trillion, one hundred eleven billion, one hundred thirteen million, twenty thousand, one hundred eleven".