111431214 has 20 divisors (see below), whose sum is σ = 249688824. Its totient is φ = 37143684.

The previous prime is 111431213. The next prime is 111431227. The reversal of 111431214 is 412134111.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111431213) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 343762 + ... + 344085.

Almost surely, 2^111431214 is an apocalyptic number.

111431214 is an abundant number, since it is smaller than the sum of its proper divisors (138257610).

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

111431214 is an equidigital number, since it uses as much as digits as its factorization.

111431214 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 687861 (or 687852 counting only the distinct ones).

The product of its digits is 96, while the sum is 18.

The square root of 111431214 is about 10556.0984269758. The cubic root of 111431214 is about 481.2110823873.

Adding to 111431214 its reverse (412134111), we get a palindrome (523565325).

The spelling of 111431214 in words is "one hundred eleven million, four hundred thirty-one thousand, two hundred fourteen".