23111103311 has 4 divisors (see below), whose sum is σ = 23240215800. Its totient is φ = 22981990824.

The previous prime is 23111103299. The next prime is 23111103319. The reversal of 23111103311 is 11330111132.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-23111103311 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 23111103311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23111103319) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64555976 + ... + 64556333.

It is an arithmetic number, because the mean of its divisors is an integer number (5810053950).

Almost surely, 2^23111103311 is an apocalyptic number.

23111103311 is a deficient number, since it is larger than the sum of its proper divisors (129112489).

23111103311 is a wasteful number, since it uses less digits than its factorization.

23111103311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129112488.

The product of its (nonzero) digits is 54, while the sum is 17.

Adding to 23111103311 its reverse (11330111132), we get a palindrome (34441214443).

The spelling of 23111103311 in words is "twenty-three billion, one hundred eleven million, one hundred three thousand, three hundred eleven".