23131255112505 has 32 divisors (see below), whose sum is σ = 41135070741120. Its totient is φ = 12332817564480.

The previous prime is 23131255112393. The next prime is 23131255112513. The reversal of 23131255112505 is 50521155213132.

23131255112505 is a `hidden beast` number, since 2 + 3 + 1 + 31 + 2 + 5 + 5 + 112 + 505 = 666.

It is not a de Polignac number, because 23131255112505 - 2⁷ = 23131255112377 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23131255112505.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 26314806 + ... + 27179615.

It is an arithmetic number, because the mean of its divisors is an integer number (1285470960660).

Almost surely, 2^{23131255112505} is an apocalyptic number.

It is an amenable number.

23131255112505 is a deficient number, since it is larger than the sum of its proper divisors (18003815628615).

23131255112505 is a wasteful number, since it uses less digits than its factorization.

23131255112505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53497638 (or 53497632 counting only the distinct ones).

The product of its (nonzero) digits is 45000, while the sum is 36.

The spelling of 23131255112505 in words is "twenty-three trillion, one hundred thirty-one billion, two hundred fifty-five million, one hundred twelve thousand, five hundred five".