43838231 has 4 divisors (see below), whose sum is σ = 43887264. Its totient is φ = 43789200.

The previous prime is 43838209. The next prime is 43838243. The reversal of 43838231 is 13283834.

It is a happy number.

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 43838231 - 2¹⁰ = 43837207 is a prime.

It is a super-2 number, since 2×43838231² = 3843580994418722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43838281) 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, 23150 + ... + 24971.

It is an arithmetic number, because the mean of its divisors is an integer number (10971816).

Almost surely, 2^43838231 is an apocalyptic number.

43838231 is a deficient number, since it is larger than the sum of its proper divisors (49033).

43838231 is an equidigital number, since it uses as much as digits as its factorization.

43838231 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49032.

The product of its digits is 13824, while the sum is 32.

The square root of 43838231 is about 6621.0445550532. The cubic root of 43838231 is about 352.6016500098.

The spelling of 43838231 in words is "forty-three million, eight hundred thirty-eight thousand, two hundred thirty-one".