43531016 has 16 divisors (see below), whose sum is σ = 86422140. Its totient is φ = 20485120.

The previous prime is 43531013. The next prime is 43531021. The reversal of 43531016 is 61013534.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 41654116 + 1876900 = 6454^2 + 1370^2 .

It is a junction number, because it is equal to n+sod(n) for n = 43530982 and 43531000.

It is not an unprimeable number, because it can be changed into a prime (43531013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 159905 + ... + 160176.

Almost surely, 2^43531016 is an apocalyptic number.

It is an amenable number.

43531016 is a deficient number, since it is larger than the sum of its proper divisors (42891124).

43531016 is a wasteful number, since it uses less digits than its factorization.

43531016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320104 (or 320100 counting only the distinct ones).

The product of its (nonzero) digits is 1080, while the sum is 23.

The square root of 43531016 is about 6597.8038770488. The cubic root of 43531016 is about 351.7760498692.

The spelling of 43531016 in words is "forty-three million, five hundred thirty-one thousand, sixteen".