23012161 has 8 divisors (see below), whose sum is σ = 23284800. Its totient is φ = 22741488.

The previous prime is 23012149. The next prime is 23012179. The reversal of 23012161 is 16121032.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 23012161 - 2⁹ = 23011649 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 (23012191) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38910 + ... + 39496.

It is an arithmetic number, because the mean of its divisors is an integer number (2910600).

Almost surely, 2^23012161 is an apocalyptic number.

It is an amenable number.

23012161 is a deficient number, since it is larger than the sum of its proper divisors (272639).

23012161 is a wasteful number, since it uses less digits than its factorization.

23012161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 983.

The product of its (nonzero) digits is 72, while the sum is 16.

The square root of 23012161 is about 4797.0992276583. The cubic root of 23012161 is about 284.4368112790.

Adding to 23012161 its reverse (16121032), we get a palindrome (39133193).

The spelling of 23012161 in words is "twenty-three million, twelve thousand, one hundred sixty-one".