22312013352 has 64 divisors (see below), whose sum is σ = 57147068160. Its totient is φ = 7256620800.

The previous prime is 22312013287. The next prime is 22312013363. The reversal of 22312013352 is 25331021322.

It is a happy number.

It is a super-3 number, since 3×22312013352³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 181777 + ... + 278687.

It is an arithmetic number, because the mean of its divisors is an integer number (892922940).

Almost surely, 2^22312013352 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 22312013352, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28573534080).

22312013352 is an abundant number, since it is smaller than the sum of its proper divisors (34835054808).

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

22312013352 is a wasteful number, since it uses less digits than its factorization.

22312013352 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97154 (or 97150 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 24.

Adding to 22312013352 its reverse (25331021322), we get a palindrome (47643034674).

The spelling of 22312013352 in words is "twenty-two billion, three hundred twelve million, thirteen thousand, three hundred fifty-two".