12781341 has 8 divisors (see below), whose sum is σ = 18935360. Its totient is φ = 8520876.

The previous prime is 12781339. The next prime is 12781343. The reversal of 12781341 is 14318721.

It is an interprime number because it is at equal distance from previous prime (12781339) and next prime (12781343).

It is not a de Polignac number, because 12781341 - 2¹ = 12781339 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: 473383 = 12781341 / (1 + 2 + 7 + 8 + 1 + 3 + 4 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12781343) 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, 236665 + ... + 236718.

It is an arithmetic number, because the mean of its divisors is an integer number (2366920).

Almost surely, 2^12781341 is an apocalyptic number.

It is an amenable number.

12781341 is a deficient number, since it is larger than the sum of its proper divisors (6154019).

12781341 is an equidigital number, since it uses as much as digits as its factorization.

12781341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473392 (or 473386 counting only the distinct ones).

The product of its digits is 1344, while the sum is 27.

The square root of 12781341 is about 3575.1001384577. The cubic root of 12781341 is about 233.8076986832.

The spelling of 12781341 in words is "twelve million, seven hundred eighty-one thousand, three hundred forty-one".