43448131 has 4 divisors (see below), whose sum is σ = 44184600. Its totient is φ = 42711664.

The previous prime is 43448129. The next prime is 43448147. The reversal of 43448131 is 13184434.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 43448131 - 2¹ = 43448129 is a prime.

It is a super-2 number, since 2×43448131² = 3775480174786322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43448131.

It is not an unprimeable number, because it can be changed into a prime (43448731) 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, 368146 + ... + 368263.

It is an arithmetic number, because the mean of its divisors is an integer number (11046150).

Almost surely, 2^43448131 is an apocalyptic number.

43448131 is a deficient number, since it is larger than the sum of its proper divisors (736469).

43448131 is an equidigital number, since it uses as much as digits as its factorization.

43448131 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 736468.

The product of its digits is 4608, while the sum is 28.

The square root of 43448131 is about 6591.5196275214. The cubic root of 43448131 is about 351.5526422428.

The spelling of 43448131 in words is "forty-three million, four hundred forty-eight thousand, one hundred thirty-one".