43213641 has 8 divisors (see below), whose sum is σ = 57659424. Its totient is φ = 28788480.

The previous prime is 43213637. The next prime is 43213693. The reversal of 43213641 is 14631234.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 43213641 - 2² = 43213637 is a prime.

It is not an unprimeable number, because it can be changed into a prime (43213141) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 681 + ... + 9321.

It is an arithmetic number, because the mean of its divisors is an integer number (7207428).

Almost surely, 2^43213641 is an apocalyptic number.

It is an amenable number.

43213641 is a deficient number, since it is larger than the sum of its proper divisors (14445783).

43213641 is a wasteful number, since it uses less digits than its factorization.

43213641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10311.

The product of its digits is 1728, while the sum is 24.

The square root of 43213641 is about 6573.7083141861. The cubic root of 43213641 is about 350.9190566675.

Adding to 43213641 its reverse (14631234), we get a palindrome (57844875).

The spelling of 43213641 in words is "forty-three million, two hundred thirteen thousand, six hundred forty-one".