23112403232505 has 16 divisors (see below), whose sum is σ = 38926152813120. Its totient is φ = 11677845843648.

The previous prime is 23112403232489. The next prime is 23112403232563. The reversal of 23112403232505 is 50523230421132.

It is not a de Polignac number, because 23112403232505 - 2⁴ = 23112403232489 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40548075562 + ... + 40548076131.

It is an arithmetic number, because the mean of its divisors is an integer number (2432884550820).

Almost surely, 2^{23112403232505} is an apocalyptic number.

It is an amenable number.

23112403232505 is a deficient number, since it is larger than the sum of its proper divisors (15813749580615).

23112403232505 is a wasteful number, since it uses less digits than its factorization.

23112403232505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81096151720.

The product of its (nonzero) digits is 43200, while the sum is 33.

Adding to 23112403232505 its reverse (50523230421132), we get a palindrome (73635633653637).

The spelling of 23112403232505 in words is "twenty-three trillion, one hundred twelve billion, four hundred three million, two hundred thirty-two thousand, five hundred five".