111143052 has 18 divisors (see below), whose sum is σ = 280945028. Its totient is φ = 37047672.

The previous prime is 111143047. The next prime is 111143063. The reversal of 111143052 is 250341111.

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1543618 + ... + 1543689.

Almost surely, 2^111143052 is an apocalyptic number.

111143052 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111143052 is an abundant number, since it is smaller than the sum of its proper divisors (169801976).

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

111143052 is a wasteful number, since it uses less digits than its factorization.

111143052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3087317 (or 3087312 counting only the distinct ones).

The product of its (nonzero) digits is 120, while the sum is 18.

The square root of 111143052 is about 10542.4405144160. The cubic root of 111143052 is about 480.7959190889.

Adding to 111143052 its reverse (250341111), we get a palindrome (361484163).

The spelling of 111143052 in words is "one hundred eleven million, one hundred forty-three thousand, fifty-two".