23105012511523 has 8 divisors (see below), whose sum is σ = 23642754379200. Its totient is φ = 22567289552808.

The previous prime is 23105012511433. The next prime is 23105012511583. The reversal of 23105012511523 is 32511521050132.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23105012511523 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (23105012511583) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2239933 + ... + 7157326.

It is an arithmetic number, because the mean of its divisors is an integer number (2955344297400).

Almost surely, 2^{23105012511523} is an apocalyptic number.

23105012511523 is a deficient number, since it is larger than the sum of its proper divisors (537741867677).

23105012511523 is an equidigital number, since it uses as much as digits as its factorization.

23105012511523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9454481.

The product of its (nonzero) digits is 9000, while the sum is 31.

Adding to 23105012511523 its reverse (32511521050132), we get a palindrome (55616533561655).

The spelling of 23105012511523 in words is "twenty-three trillion, one hundred five billion, twelve million, five hundred eleven thousand, five hundred twenty-three".