12931855 has 8 divisors (see below), whose sum is σ = 15606000. Its totient is φ = 10286976.

The previous prime is 12931843. The next prime is 12931861. The reversal of 12931855 is 55813921.

12931855 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 12931855 - 2⁵ = 12931823 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12931855.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6330 + ... + 8119.

It is an arithmetic number, because the mean of its divisors is an integer number (1950750).

Almost surely, 2^12931855 is an apocalyptic number.

12931855 is a deficient number, since it is larger than the sum of its proper divisors (2674145).

12931855 is a wasteful number, since it uses less digits than its factorization.

12931855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14633.

The product of its digits is 10800, while the sum is 34.

The square root of 12931855 is about 3596.0888476232. The cubic root of 12931855 is about 234.7218982732.

The spelling of 12931855 in words is "twelve million, nine hundred thirty-one thousand, eight hundred fifty-five".