43111 has 4 divisors (see below), whose sum is σ = 45400. Its totient is φ = 40824.

The previous prime is 43103. The next prime is 43117. The reversal of 43111 is 11134.

It is a happy number.

43111 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 43111 - 2³ = 43103 is a prime.

It is a Duffinian number.

43111 is a modest number, since divided by 111 gives 43 as remainder.

It is a nialpdrome in base 10 and base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43117) 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, 1116 + ... + 1153.

It is an arithmetic number, because the mean of its divisors is an integer number (11350).

2⁴³¹¹¹ is an apocalyptic number.

43111 is a deficient number, since it is larger than the sum of its proper divisors (2289).

43111 is a wasteful number, since it uses less digits than its factorization.

43111 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2288.

The product of its digits is 12, while the sum is 10.

The square root of 43111 is about 207.6318857979. The cubic root of 43111 is about 35.0641002200.

Adding to 43111 its reverse (11134), we get a palindrome (54245).

The spelling of 43111 in words is "forty-three thousand, one hundred eleven", and thus it is an iban number.