43023871 has 4 divisors (see below), whose sum is σ = 46935144. Its totient is φ = 39112600.

The previous prime is 43023857. The next prime is 43023931. The reversal of 43023871 is 17832034.

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 43023871 - 2⁵ = 43023839 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (43023811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1955620 + ... + 1955641.

It is an arithmetic number, because the mean of its divisors is an integer number (11733786).

Almost surely, 2^43023871 is an apocalyptic number.

43023871 is a deficient number, since it is larger than the sum of its proper divisors (3911273).

43023871 is a wasteful number, since it uses less digits than its factorization.

43023871 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3911272.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 43023871 is about 6559.2584184495. The cubic root of 43023871 is about 350.4046232050.

The spelling of 43023871 in words is "forty-three million, twenty-three thousand, eight hundred seventy-one".