12851271 has 8 divisors (see below), whose sum is σ = 19038960. Its totient is φ = 8567496.

The previous prime is 12851261. The next prime is 12851309. The reversal of 12851271 is 17215821.

It is not a de Polignac number, because 12851271 - 2¹⁵ = 12818503 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 475973 = 12851271 / (1 + 2 + 8 + 5 + 1 + 2 + 7 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12851261) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 237960 + ... + 238013.

It is an arithmetic number, because the mean of its divisors is an integer number (2379870).

Almost surely, 2^12851271 is an apocalyptic number.

12851271 is a deficient number, since it is larger than the sum of its proper divisors (6187689).

12851271 is an equidigital number, since it uses as much as digits as its factorization.

12851271 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475982 (or 475976 counting only the distinct ones).

The product of its digits is 1120, while the sum is 27.

The square root of 12851271 is about 3584.8669431375. The cubic root of 12851271 is about 234.2333307044.

It can be divided in two parts, 1285 and 1271, that added together give a triangular number (2556 = T₇₁).

The spelling of 12851271 in words is "twelve million, eight hundred fifty-one thousand, two hundred seventy-one".