16172323 has 4 divisors (see below), whose sum is σ = 16187848. Its totient is φ = 16156800.

The previous prime is 16172263. The next prime is 16172353. The reversal of 16172323 is 32327161.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32327161 = 107 ⋅302123.

It is a cyclic number.

It is not a de Polignac number, because 16172323 - 2¹³ = 16164131 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16172353) 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, 6078 + ... + 8323.

It is an arithmetic number, because the mean of its divisors is an integer number (4046962).

Almost surely, 2^16172323 is an apocalyptic number.

16172323 is a deficient number, since it is larger than the sum of its proper divisors (15525).

16172323 is a wasteful number, since it uses less digits than its factorization.

16172323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15524.

The product of its digits is 1512, while the sum is 25.

The square root of 16172323 is about 4021.4826867711. The cubic root of 16172323 is about 252.8856206251.

Adding to 16172323 its reverse (32327161), we get a palindrome (48499484).

The spelling of 16172323 in words is "sixteen million, one hundred seventy-two thousand, three hundred twenty-three".