12347312047 has 4 divisors (see below), whose sum is σ = 14111213776. Its totient is φ = 10583410320.

The previous prime is 12347312039. The next prime is 12347312071. The reversal of 12347312047 is 74021374321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 74021374321 = 83 ⋅891823787.

It is not a de Polignac number, because 12347312047 - 2³ = 12347312039 is a prime.

It is a super-2 number, since 2×12347312047² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12347312077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 881950854 + ... + 881950867.

It is an arithmetic number, because the mean of its divisors is an integer number (3527803444).

Almost surely, 2^12347312047 is an apocalyptic number.

12347312047 is a deficient number, since it is larger than the sum of its proper divisors (1763901729).

12347312047 is an equidigital number, since it uses as much as digits as its factorization.

12347312047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1763901728.

The product of its (nonzero) digits is 28224, while the sum is 34.

Adding to 12347312047 its reverse (74021374321), we get a palindrome (86368686368).

The spelling of 12347312047 in words is "twelve billion, three hundred forty-seven million, three hundred twelve thousand, forty-seven".