12312320353012 has 12 divisors (see below), whose sum is σ = 21841718982916. Its totient is φ = 6071829215040.

The previous prime is 12312320353009. The next prime is 12312320353013. The reversal of 12312320353012 is 21035302321321.

It can be written as a sum of positive squares in 2 ways, for example, as 3012772518756 + 9299547834256 = 1735734^2 + 3049516^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12312320353013) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 21082740039 + ... + 21082740622.

Almost surely, 2^{12312320353012} is an apocalyptic number.

It is an amenable number.

12312320353012 is a deficient number, since it is larger than the sum of its proper divisors (9529398629904).

12312320353012 is a wasteful number, since it uses less digits than its factorization.

12312320353012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42165480738 (or 42165480736 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 28.

Adding to 12312320353012 its reverse (21035302321321), we get a palindrome (33347622674333).

The spelling of 12312320353012 in words is "twelve trillion, three hundred twelve billion, three hundred twenty million, three hundred fifty-three thousand, twelve".