9312112140 has 96 divisors (see below), whose sum is σ = 26470960320. Its totient is φ = 2445520896.

The previous prime is 9312112133. The next prime is 9312112157. The reversal of 9312112140 is 412112139.

It is a self number, because there is not a number n which added to its sum of digits gives 9312112140.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4102926 + ... + 4105194.

It is an arithmetic number, because the mean of its divisors is an integer number (275739170).

Almost surely, 2^9312112140 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 9312112140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (13235480160).

9312112140 is an abundant number, since it is smaller than the sum of its proper divisors (17158848180).

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

9312112140 is a wasteful number, since it uses less digits than its factorization.

9312112140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3291 (or 3289 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 9312112140 is about 96499.2856968382. The cubic root of 9312112140 is about 2103.8562658127.

Adding to 9312112140 its reverse (412112139), we get a palindrome (9724224279).

The spelling of 9312112140 in words is "nine billion, three hundred twelve million, one hundred twelve thousand, one hundred forty".