12855731 has 8 divisors (see below), whose sum is σ = 15166464. Its totient is φ = 10663560.

The previous prime is 12855721. The next prime is 12855751. The reversal of 12855731 is 13755821.

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

It is a cyclic number.

It is not a de Polignac number, because 12855731 - 2¹⁰ = 12854707 is a prime.

It is a super-2 number, since 2×12855731² = 330539639088722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12855721) 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, 29405 + ... + 29838.

It is an arithmetic number, because the mean of its divisors is an integer number (1895808).

Almost surely, 2^12855731 is an apocalyptic number.

12855731 is a deficient number, since it is larger than the sum of its proper divisors (2310733).

12855731 is an equidigital number, since it uses as much as digits as its factorization.

12855731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59281.

The product of its digits is 8400, while the sum is 32.

The square root of 12855731 is about 3585.4889485257. The cubic root of 12855731 is about 234.2604242588.

The spelling of 12855731 in words is "twelve million, eight hundred fifty-five thousand, seven hundred thirty-one".