23105143136 has 24 divisors (see below), whose sum is σ = 46717665120. Its totient is φ = 11240339328.

The previous prime is 23105143133. The next prime is 23105143151. The reversal of 23105143136 is 63134150132.

It is a junction number, because it is equal to n+sod(n) for n = 23105143099 and 23105143108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23105143133) 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, 9756056 + ... + 9758423.

It is an arithmetic number, because the mean of its divisors is an integer number (1946569380).

Almost surely, 2^23105143136 is an apocalyptic number.

It is an amenable number.

23105143136 is an abundant number, since it is smaller than the sum of its proper divisors (23612521984).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23105143136 is a wasteful number, since it uses less digits than its factorization.

23105143136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19514526 (or 19514518 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 29.

Adding to 23105143136 its reverse (63134150132), we get a palindrome (86239293268).

The spelling of 23105143136 in words is "twenty-three billion, one hundred five million, one hundred forty-three thousand, one hundred thirty-six".