32161423 has 4 divisors (see below), whose sum is σ = 36755920. Its totient is φ = 27566928.

The previous prime is 32161411. The next prime is 32161427. The reversal of 32161423 is 32416123.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-32161423 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 32161394 and 32161403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (32161427) 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, 2297238 + ... + 2297251.

It is an arithmetic number, because the mean of its divisors is an integer number (9188980).

Almost surely, 2^32161423 is an apocalyptic number.

32161423 is a deficient number, since it is larger than the sum of its proper divisors (4594497).

32161423 is an equidigital number, since it uses as much as digits as its factorization.

32161423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4594496.

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

The square root of 32161423 is about 5671.1042134667. The cubic root of 32161423 is about 318.0131549217.

Adding to 32161423 its reverse (32416123), we get a palindrome (64577546).

The spelling of 32161423 in words is "thirty-two million, one hundred sixty-one thousand, four hundred twenty-three".