111143136 has 48 divisors (see below), whose sum is σ = 314196624. Its totient is φ = 34197504.

The previous prime is 111143119. The next prime is 111143171. The reversal of 111143136 is 631341111.

It is a tau number, because it is divible by the number of its divisors (48).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43281 + ... + 45776.

It is an arithmetic number, because the mean of its divisors is an integer number (6545763).

Almost surely, 2^111143136 is an apocalyptic number.

111143136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

111143136 is an abundant number, since it is smaller than the sum of its proper divisors (203053488).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

111143136 is a wasteful number, since it uses less digits than its factorization.

111143136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 89083 (or 89075 counting only the distinct ones).

The product of its digits is 216, while the sum is 21.

The square root of 111143136 is about 10542.4444983125. Note that the first 4 decimals coincide. The cubic root of 111143136 is about 480.7960402146.

Adding to 111143136 its reverse (631341111), we get a palindrome (742484247).

The spelling of 111143136 in words is "one hundred eleven million, one hundred forty-three thousand, one hundred thirty-six".