12812907 has 4 divisors (see below), whose sum is σ = 17083880. Its totient is φ = 8541936.

The previous prime is 12812893. The next prime is 12812963. The reversal of 12812907 is 70921821.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70921821 = 3 ⋅23640607.

It is not a de Polignac number, because 12812907 - 2¹⁵ = 12780139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12811907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2135482 + ... + 2135487.

It is an arithmetic number, because the mean of its divisors is an integer number (4270970).

Almost surely, 2^12812907 is an apocalyptic number.

12812907 is a deficient number, since it is larger than the sum of its proper divisors (4270973).

12812907 is an equidigital number, since it uses as much as digits as its factorization.

12812907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4270972.

The product of its (nonzero) digits is 2016, while the sum is 30.

The square root of 12812907 is about 3579.5121175937. The cubic root of 12812907 is about 234.0000182628. Note that the first 4 decimals are identical.

The spelling of 12812907 in words is "twelve million, eight hundred twelve thousand, nine hundred seven".