43361 has 4 divisors (see below), whose sum is σ = 43824. Its totient is φ = 42900.

The previous prime is 43331. The next prime is 43391. The reversal of 43361 is 16334.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 16334 = 2 ⋅8167.

It is an interprime number because it is at equal distance from previous prime (43331) and next prime (43391).

It is a cyclic number.

It is not a de Polignac number, because 43361 - 2¹⁰ = 42337 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is not an unprimeable number, because it can be changed into a prime (43321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35 + ... + 296.

It is an arithmetic number, because the mean of its divisors is an integer number (10956).

2⁴³³⁶¹ is an apocalyptic number.

It is an amenable number.

43361 is a deficient number, since it is larger than the sum of its proper divisors (463).

43361 is a wasteful number, since it uses less digits than its factorization.

43361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462.

The product of its digits is 216, while the sum is 17.

The square root of 43361 is about 208.2330425269. The cubic root of 43361 is about 35.1317483435.

Adding to 43361 its reverse (16334), we get a palindrome (59695).

It can be divided in two parts, 433 and 61, that added together give a palindrome (494).

The spelling of 43361 in words is "forty-three thousand, three hundred sixty-one".