12943248319 has 4 divisors (see below), whose sum is σ = 12962889720. Its totient is φ = 12923606920.

The previous prime is 12943248317. The next prime is 12943248323. The reversal of 12943248319 is 91384234921.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 12943248319 - 2¹ = 12943248317 is a prime.

It is a super-2 number, since 2×12943248319² (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 (12943248313) 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, 9819712 + ... + 9821029.

It is an arithmetic number, because the mean of its divisors is an integer number (3240722430).

Almost surely, 2^12943248319 is an apocalyptic number.

12943248319 is a deficient number, since it is larger than the sum of its proper divisors (19641401).

12943248319 is an equidigital number, since it uses as much as digits as its factorization.

12943248319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19641400.

The product of its digits is 373248, while the sum is 46.

The spelling of 12943248319 in words is "twelve billion, nine hundred forty-three million, two hundred forty-eight thousand, three hundred nineteen".