23203018161 has 16 divisors (see below), whose sum is σ = 34391012800. Its totient is φ = 15461401824.

The previous prime is 23203018133. The next prime is 23203018187. The reversal of 23203018161 is 16181030232.

It is a happy number.

It is not a de Polignac number, because 23203018161 - 2⁵ = 23203018129 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23203014161) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 143371 + ... + 258768.

It is an arithmetic number, because the mean of its divisors is an integer number (2149438300).

Almost surely, 2^23203018161 is an apocalyptic number.

It is an amenable number.

23203018161 is a deficient number, since it is larger than the sum of its proper divisors (11187994639).

23203018161 is a wasteful number, since it uses less digits than its factorization.

23203018161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 404285 (or 404279 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

Adding to 23203018161 its reverse (16181030232), we get a palindrome (39384048393).

The spelling of 23203018161 in words is "twenty-three billion, two hundred three million, eighteen thousand, one hundred sixty-one".