12313332528 has 80 divisors (see below), whose sum is σ = 36485164800. Its totient is φ = 3505367808.

The previous prime is 12313332523. The next prime is 12313332529. The reversal of 12313332528 is 82523331321.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (12313332523) 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 15 ways as a sum of consecutive naturals, for example, 26923 + ... + 159221.

It is an arithmetic number, because the mean of its divisors is an integer number (456064560).

Almost surely, 2^12313332528 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 12313332528, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18242582400).

12313332528 is an abundant number, since it is smaller than the sum of its proper divisors (24171832272).

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

12313332528 is a wasteful number, since it uses less digits than its factorization.

12313332528 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132594 (or 132588 counting only the distinct ones).

The product of its digits is 25920, while the sum is 33.

Adding to 12313332528 its reverse (82523331321), we get a palindrome (94836663849).

The spelling of 12313332528 in words is "twelve billion, three hundred thirteen million, three hundred thirty-two thousand, five hundred twenty-eight".