111431412 has 72 divisors (see below), whose sum is σ = 299033280. Its totient is φ = 34911360.

The previous prime is 111431377. The next prime is 111431417. The reversal of 111431412 is 214134111.

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

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (111431417) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47712 + ... + 49992.

It is an arithmetic number, because the mean of its divisors is an integer number (4153240).

Almost surely, 2^111431412 is an apocalyptic number.

111431412 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 111431412, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (149516640).

111431412 is an abundant number, since it is smaller than the sum of its proper divisors (187601868).

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

111431412 is a wasteful number, since it uses less digits than its factorization.

111431412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2373 (or 2368 counting only the distinct ones).

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

The square root of 111431412 is about 10556.1078054366. The cubic root of 111431412 is about 481.2113674054.

Adding to 111431412 its reverse (214134111), we get a palindrome (325565523).

The spelling of 111431412 in words is "one hundred eleven million, four hundred thirty-one thousand, four hundred twelve".