12320313012 has 72 divisors (see below), whose sum is σ = 36740168192. Its totient is φ = 3406536000.

The previous prime is 12320313007. The next prime is 12320313017. The reversal of 12320313012 is 21031302321.

12320313012 is a `hidden beast` number, since 12 + 320 + 31 + 301 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (12320313007) and next prime (12320313017).

It is a super-2 number, since 2×12320313012² (a number of 21 digits) contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12320313017) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 780739 + ... + 796362.

Almost surely, 2^12320313012 is an apocalyptic number.

12320313012 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

12320313012 is an abundant number, since it is smaller than the sum of its proper divisors (24419855180).

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

12320313012 is a wasteful number, since it uses less digits than its factorization.

12320313012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1577149 (or 1577144 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 12320313012 its reverse (21031302321), we get a palindrome (33351615333).

The spelling of 12320313012 in words is "twelve billion, three hundred twenty million, three hundred thirteen thousand, twelve".