23016191 has 4 divisors (see below), whose sum is σ = 25108584. Its totient is φ = 20923800.

The previous prime is 23016187. The next prime is 23016199. The reversal of 23016191 is 19161032.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 23016191 - 2² = 23016187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23016199) 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, 1046180 + ... + 1046201.

It is an arithmetic number, because the mean of its divisors is an integer number (6277146).

Almost surely, 2^23016191 is an apocalyptic number.

23016191 is a deficient number, since it is larger than the sum of its proper divisors (2092393).

23016191 is a wasteful number, since it uses less digits than its factorization.

23016191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2092392.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 23016191 is about 4797.5192547816. The cubic root of 23016191 is about 284.4534142894.

The spelling of 23016191 in words is "twenty-three million, sixteen thousand, one hundred ninety-one".