23111220344263 has 2 divisors, whose sum is σ = 23111220344264. Its totient is φ = 23111220344262.

The previous prime is 23111220344189. The next prime is 23111220344297. The reversal of 23111220344263 is 36244302211132.

It is an a-pointer prime, because the next prime (23111220344297) can be obtained adding 23111220344263 to its sum of digits (34).

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23111220344263 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (23111220344963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11555610172131 + 11555610172132.

It is an arithmetic number, because the mean of its divisors is an integer number (11555610172132).

Almost surely, 2^{23111220344263} is an apocalyptic number.

23111220344263 is a deficient number, since it is larger than the sum of its proper divisors (1).

23111220344263 is an equidigital number, since it uses as much as digits as its factorization.

23111220344263 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 41472, while the sum is 34.

Adding to 23111220344263 its reverse (36244302211132), we get a palindrome (59355522555395).

The spelling of 23111220344263 in words is "twenty-three trillion, one hundred eleven billion, two hundred twenty million, three hundred forty-four thousand, two hundred sixty-three".