23145233105317 has 2 divisors, whose sum is σ = 23145233105318. Its totient is φ = 23145233105316.

The previous prime is 23145233105299. The next prime is 23145233105429. The reversal of 23145233105317 is 71350133254132.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23114229291076 + 31003814241 = 4807726^2 + 176079^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23145233105317 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23145233105317.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23145233195317) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11572616552658 + 11572616552659.

It is an arithmetic number, because the mean of its divisors is an integer number (11572616552659).

Almost surely, 2^{23145233105317} is an apocalyptic number.

It is an amenable number.

23145233105317 is a deficient number, since it is larger than the sum of its proper divisors (1).

23145233105317 is an equidigital number, since it uses as much as digits as its factorization.

23145233105317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 226800, while the sum is 40.

Adding to 23145233105317 its reverse (71350133254132), we get a palindrome (94495366359449).

The spelling of 23145233105317 in words is "twenty-three trillion, one hundred forty-five billion, two hundred thirty-three million, one hundred five thousand, three hundred seventeen".