111312252 has 48 divisors (see below), whose sum is σ = 289336320. Its totient is φ = 37007856.

The previous prime is 111312239. The next prime is 111312263. The reversal of 111312252 is 252213111.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49333 + ... + 51539.

It is an arithmetic number, because the mean of its divisors is an integer number (6027840).

Almost surely, 2^111312252 is an apocalyptic number.

111312252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

111312252 is an abundant number, since it is smaller than the sum of its proper divisors (178024068).

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

111312252 is a wasteful number, since it uses less digits than its factorization.

111312252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2687 (or 2679 counting only the distinct ones).

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

The square root of 111312252 is about 10550.4621699715. The cubic root of 111312252 is about 481.0397772554.

Adding to 111312252 its reverse (252213111), we get a palindrome (363525363).

The spelling of 111312252 in words is "one hundred eleven million, three hundred twelve thousand, two hundred fifty-two".