12451312312 has 32 divisors (see below), whose sum is σ = 24767104320. Its totient is φ = 5848161280.

The previous prime is 12451312309. The next prime is 12451312327. The reversal of 12451312312 is 21321315421.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 17008 + ... + 158719.

It is an arithmetic number, because the mean of its divisors is an integer number (773972010).

Almost surely, 2^12451312312 is an apocalyptic number.

It is an amenable number.

12451312312 is a deficient number, since it is larger than the sum of its proper divisors (12315792008).

12451312312 is a wasteful number, since it uses less digits than its factorization.

12451312312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176271 (or 176267 counting only the distinct ones).

The product of its digits is 1440, while the sum is 25.

Adding to 12451312312 its reverse (21321315421), we get a palindrome (33772627733).

The spelling of 12451312312 in words is "twelve billion, four hundred fifty-one million, three hundred twelve thousand, three hundred twelve".