43423161 has 4 divisors (see below), whose sum is σ = 57897552. Its totient is φ = 28948772.

The previous prime is 43423153. The next prime is 43423181. The reversal of 43423161 is 16132434.

43423161 is nontrivially palindromic in base 14.

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.

It is a cyclic number.

It is not a de Polignac number, because 43423161 - 2³ = 43423153 is a prime.

It is a super-2 number, since 2×43423161² = 3771141822463842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (43423111) 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, 7237191 + ... + 7237196.

It is an arithmetic number, because the mean of its divisors is an integer number (14474388).

Almost surely, 2^43423161 is an apocalyptic number.

It is an amenable number.

43423161 is a deficient number, since it is larger than the sum of its proper divisors (14474391).

43423161 is a wasteful number, since it uses less digits than its factorization.

43423161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14474390.

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

The square root of 43423161 is about 6589.6252548988. The cubic root of 43423161 is about 351.4852826007.

Adding to 43423161 its reverse (16132434), we get a palindrome (59555595).

It can be divided in two parts, 4342 and 3161, that added together give a triangular number (7503 = T₁₂₂).

The spelling of 43423161 in words is "forty-three million, four hundred twenty-three thousand, one hundred sixty-one".