43631140 has 48 divisors (see below), whose sum is σ = 107557632. Its totient is φ = 14553216.

The previous prime is 43631117. The next prime is 43631171. The reversal of 43631140 is 4113634.

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, 969 + ... + 9391.

It is an arithmetic number, because the mean of its divisors is an integer number (2240784).

Almost surely, 2^43631140 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 43631140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53778816).

43631140 is an abundant number, since it is smaller than the sum of its proper divisors (63926492).

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

43631140 is a wasteful number, since it uses less digits than its factorization.

43631140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8476 (or 8474 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 43631140 is about 6605.3871953126. The cubic root of 43631140 is about 352.0455455012.

Adding to 43631140 its reverse (4113634), we get a palindrome (47744774).

The spelling of 43631140 in words is "forty-three million, six hundred thirty-one thousand, one hundred forty".