23311022112 has 144 divisors (see below), whose sum is σ = 75909113280. Its totient is φ = 6647256576.

The previous prime is 23311022107. The next prime is 23311022113. The reversal of 23311022112 is 21122011332.

It is a tau number, because it is divible by the number of its divisors (144).

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

It is not an unprimeable number, because it can be changed into a prime (23311022113) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 1043314 + ... + 1065422.

It is an arithmetic number, because the mean of its divisors is an integer number (527146620).

Almost surely, 2^23311022112 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 23311022112, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (37954556640).

23311022112 is an abundant number, since it is smaller than the sum of its proper divisors (52598091168).

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

23311022112 is a wasteful number, since it uses less digits than its factorization.

23311022112 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22655 (or 22644 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 23311022112 its reverse (21122011332), we get a palindrome (44433033444).

The spelling of 23311022112 in words is "twenty-three billion, three hundred eleven million, twenty-two thousand, one hundred twelve".