12786093731 has 4 divisors (see below), whose sum is σ = 13083444792. Its totient is φ = 12488742672.

The previous prime is 12786093701. The next prime is 12786093773. The reversal of 12786093731 is 13739068721.

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 12786093731 - 2¹⁸ = 12785831587 is a prime.

It is a super-2 number, since 2×12786093731² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12786093701) 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, 148675466 + ... + 148675551.

It is an arithmetic number, because the mean of its divisors is an integer number (3270861198).

Almost surely, 2^12786093731 is an apocalyptic number.

12786093731 is a deficient number, since it is larger than the sum of its proper divisors (297351061).

12786093731 is an equidigital number, since it uses as much as digits as its factorization.

12786093731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 297351060.

The product of its (nonzero) digits is 381024, while the sum is 47.

The spelling of 12786093731 in words is "twelve billion, seven hundred eighty-six million, ninety-three thousand, seven hundred thirty-one".