16091323 has 4 divisors (see below), whose sum is σ = 16331560. Its totient is φ = 15851088.

The previous prime is 16091321. The next prime is 16091353. The reversal of 16091323 is 32319061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32319061 = 3229 ⋅10009.

It is a cyclic number.

It is not a de Polignac number, because 16091323 - 2¹ = 16091321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16091321) 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, 120018 + ... + 120151.

It is an arithmetic number, because the mean of its divisors is an integer number (4082890).

Almost surely, 2^16091323 is an apocalyptic number.

16091323 is a deficient number, since it is larger than the sum of its proper divisors (240237).

16091323 is an equidigital number, since it uses as much as digits as its factorization.

16091323 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240236.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 16091323 is about 4011.3991324724. The cubic root of 16091323 is about 252.4627164504.

The spelling of 16091323 in words is "sixteen million, ninety-one thousand, three hundred twenty-three".