23432161 has 4 divisors (see below), whose sum is σ = 23461524. Its totient is φ = 23402800.

The previous prime is 23432159. The next prime is 23432173. The reversal of 23432161 is 16123432.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6051600 + 17380561 = 2460^2 + 4169^2 .

It is a cyclic number.

It is not a de Polignac number, because 23432161 - 2¹ = 23432159 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23432141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13450 + ... + 15091.

It is an arithmetic number, because the mean of its divisors is an integer number (5865381).

Almost surely, 2^23432161 is an apocalyptic number.

It is an amenable number.

23432161 is a deficient number, since it is larger than the sum of its proper divisors (29363).

23432161 is an equidigital number, since it uses as much as digits as its factorization.

23432161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29362.

The product of its digits is 864, while the sum is 22.

The square root of 23432161 is about 4840.6777418043. The cubic root of 23432161 is about 286.1568287504.

Adding to 23432161 its reverse (16123432), we get a palindrome (39555593).

The spelling of 23432161 in words is "twenty-three million, four hundred thirty-two thousand, one hundred sixty-one".