23115321131305 has 16 divisors (see below), whose sum is σ = 29905785068544. Its totient is φ = 17050531170240.

The previous prime is 23115321131299. The next prime is 23115321131347. The reversal of 23115321131305 is 50313112351132.

It is a de Polignac number, because none of the positive numbers 2^k-23115321131305 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 200404761 + ... + 200520070.

It is an arithmetic number, because the mean of its divisors is an integer number (1869111566784).

Almost surely, 2^{23115321131305} is an apocalyptic number.

It is an amenable number.

23115321131305 is a deficient number, since it is larger than the sum of its proper divisors (6790463937239).

23115321131305 is a wasteful number, since it uses less digits than its factorization.

23115321131305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400925736.

The product of its (nonzero) digits is 8100, while the sum is 31.

Adding to 23115321131305 its reverse (50313112351132), we get a palindrome (73428433482437).

The spelling of 23115321131305 in words is "twenty-three trillion, one hundred fifteen billion, three hundred twenty-one million, one hundred thirty-one thousand, three hundred five".