12781373 has 16 divisors (see below), whose sum is σ = 14601600. Its totient is φ = 11081280.

The previous prime is 12781367. The next prime is 12781411. The reversal of 12781373 is 37318721.

12781373 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 12781373 - 2⁸ = 12781117 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12781303) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32663 + ... + 33051.

It is an arithmetic number, because the mean of its divisors is an integer number (912600).

Almost surely, 2^12781373 is an apocalyptic number.

It is an amenable number.

12781373 is a deficient number, since it is larger than the sum of its proper divisors (1820227).

12781373 is a wasteful number, since it uses less digits than its factorization.

12781373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 532.

The product of its digits is 7056, while the sum is 32.

The square root of 12781373 is about 3575.1046138540. The cubic root of 12781373 is about 233.8078938072.

The spelling of 12781373 in words is "twelve million, seven hundred eighty-one thousand, three hundred seventy-three".