43113312 has 144 divisors (see below), whose sum is σ = 138378240. Its totient is φ = 12614400.

The previous prime is 43113307. The next prime is 43113319. The reversal of 43113312 is 21331134.

It is a tau number, because it is divible by the number of its divisors (144).

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 (43113319) 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, 97989 + ... + 98427.

It is an arithmetic number, because the mean of its divisors is an integer number (960960).

Almost surely, 2^43113312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43113312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (69189120).

43113312 is an abundant number, since it is smaller than the sum of its proper divisors (95264928).

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

43113312 is a wasteful number, since it uses less digits than its factorization.

43113312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 497 (or 486 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 43113312 is about 6566.0727988654. The cubic root of 43113312 is about 350.6472702642.

Adding to 43113312 its reverse (21331134), we get a palindrome (64444446).

The spelling of 43113312 in words is "forty-three million, one hundred thirteen thousand, three hundred twelve".