23011111116 has 144 divisors (see below), whose sum is σ = 69629414400. Its totient is φ = 6264948096.

The previous prime is 23011111061. The next prime is 23011111129. The reversal of 23011111116 is 61111111032.

It is a super-2 number, since 2×23011111116² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18).

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 47 ways as a sum of consecutive naturals, for example, 1551745 + ... + 1566503.

It is an arithmetic number, because the mean of its divisors is an integer number (483537600).

Almost surely, 2^23011111116 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23011111116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (34814707200).

23011111116 is an abundant number, since it is smaller than the sum of its proper divisors (46618303284).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23011111116 is a wasteful number, since it uses less digits than its factorization.

23011111116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15068 (or 15063 counting only the distinct ones).

The product of its (nonzero) digits is 36, while the sum is 18.

Adding to 23011111116 its reverse (61111111032), we get a palindrome (84122222148).

The spelling of 23011111116 in words is "twenty-three billion, eleven million, one hundred eleven thousand, one hundred sixteen".