12311322052 has 24 divisors (see below), whose sum is σ = 21675580416. Its totient is φ = 6118411488.

The previous prime is 12311322043. The next prime is 12311322059. The reversal of 12311322052 is 25022311321.

It is a super-2 number, since 2×12311322052² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12311322059) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 435163 + ... + 462589.

It is an arithmetic number, because the mean of its divisors is an integer number (903149184).

Almost surely, 2^12311322052 is an apocalyptic number.

It is an amenable number.

12311322052 is a deficient number, since it is larger than the sum of its proper divisors (9364258364).

12311322052 is a wasteful number, since it uses less digits than its factorization.

12311322052 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28107 (or 28105 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 22.

Adding to 12311322052 its reverse (25022311321), we get a palindrome (37333633373).

The spelling of 12311322052 in words is "twelve billion, three hundred eleven million, three hundred twenty-two thousand, fifty-two".