43131006 has 48 divisors (see below), whose sum is σ = 100666800. Its totient is φ = 13296384.

The previous prime is 43130987. The next prime is 43131031. The reversal of 43131006 is 60013134.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a self number, because there is not a number n which added to its sum of digits gives 43131006.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 16860 + ... + 19248.

It is an arithmetic number, because the mean of its divisors is an integer number (2097225).

Almost surely, 2^43131006 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 43131006, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (50333400).

43131006 is an abundant number, since it is smaller than the sum of its proper divisors (57535794).

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

43131006 is a wasteful number, since it uses less digits than its factorization.

43131006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2473 (or 2470 counting only the distinct ones).

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

The square root of 43131006 is about 6567.4200413861. The cubic root of 43131006 is about 350.6952330544.

The spelling of 43131006 in words is "forty-three million, one hundred thirty-one thousand, six".