111111371 has 12 divisors (see below), whose sum is σ = 136856088. Its totient is φ = 89635392.

The previous prime is 111111361. The next prime is 111111391. The reversal of 111111371 is 173111111.

It is not a de Polignac number, because 111111371 - 2¹⁴ = 111094987 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (111111331) 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, 65861 + ... + 67526.

It is an arithmetic number, because the mean of its divisors is an integer number (11404674).

Almost surely, 2^111111371 is an apocalyptic number.

111111371 is a deficient number, since it is larger than the sum of its proper divisors (25744717).

111111371 is a wasteful number, since it uses less digits than its factorization.

111111371 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 133418 (or 133411 counting only the distinct ones).

The product of its digits is 21, while the sum is 17.

The square root of 111111371 is about 10540.9378614998. The cubic root of 111111371 is about 480.7502315935.

Adding to 111111371 its reverse (173111111), we get a palindrome (284222482).

The spelling of 111111371 in words is "one hundred eleven million, one hundred eleven thousand, three hundred seventy-one".