43131140 has 48 divisors (see below), whose sum is σ = 102688320. Its totient is φ = 15085440.

The previous prime is 43131131. The next prime is 43131161. The reversal of 43131140 is 4113134.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 575 + ... + 9305.

It is an arithmetic number, because the mean of its divisors is an integer number (2139340).

Almost surely, 2^43131140 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 43131140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (51344160).

43131140 is an abundant number, since it is smaller than the sum of its proper divisors (59557180).

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

43131140 is a wasteful number, since it uses less digits than its factorization.

43131140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8772 (or 8770 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 17.

The square root of 43131140 is about 6567.4302432534. The cubic root of 43131140 is about 350.6955962357.

Adding to 43131140 its reverse (4113134), we get a palindrome (47244274).

The spelling of 43131140 in words is "forty-three million, one hundred thirty-one thousand, one hundred forty".