12723771 has 8 divisors (see below), whose sum is σ = 16995664. Its totient is φ = 8467200.

The previous prime is 12723731. The next prime is 12723791. The reversal of 12723771 is 17732721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12723771 - 2¹⁰ = 12722747 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12723731) 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 7 ways as a sum of consecutive naturals, for example, 1726 + ... + 5331.

It is an arithmetic number, because the mean of its divisors is an integer number (2124458).

Almost surely, 2^12723771 is an apocalyptic number.

12723771 is a deficient number, since it is larger than the sum of its proper divisors (4271893).

12723771 is an equidigital number, since it uses as much as digits as its factorization.

12723771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7661.

The product of its digits is 4116, while the sum is 30.

The square root of 12723771 is about 3567.0395287970. The cubic root of 12723771 is about 233.4561296957.

The spelling of 12723771 in words is "twelve million, seven hundred twenty-three thousand, seven hundred seventy-one".