43731340 has 12 divisors (see below), whose sum is σ = 91835856. Its totient is φ = 17492528.

The previous prime is 43731313. The next prime is 43731367. The reversal of 43731340 is 4313734.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (43731313) and next prime (43731367).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1093264 + ... + 1093303.

It is an arithmetic number, because the mean of its divisors is an integer number (7652988).

Almost surely, 2^43731340 is an apocalyptic number.

It is an amenable number.

43731340 is an abundant number, since it is smaller than the sum of its proper divisors (48104516).

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

43731340 is a wasteful number, since it uses less digits than its factorization.

43731340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2186576 (or 2186574 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 25.

The square root of 43731340 is about 6612.9675638098. The cubic root of 43731340 is about 352.3148332529.

The spelling of 43731340 in words is "forty-three million, seven hundred thirty-one thousand, three hundred forty".