12855131 has 2 divisors, whose sum is σ = 12855132. Its totient is φ = 12855130.

The previous prime is 12855127. The next prime is 12855187. The reversal of 12855131 is 13155821.

It is a happy number.

12855131 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12855131 - 2² = 12855127 is a prime.

It is a super-2 number, since 2×12855131² = 330508786054322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12855131.

It is not a weakly prime, because it can be changed into another prime (12851131) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6427565 + 6427566.

It is an arithmetic number, because the mean of its divisors is an integer number (6427566).

Almost surely, 2^12855131 is an apocalyptic number.

12855131 is a deficient number, since it is larger than the sum of its proper divisors (1).

12855131 is an equidigital number, since it uses as much as digits as its factorization.

12855131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1200, while the sum is 26.

The square root of 12855131 is about 3585.4052769527. The cubic root of 12855131 is about 234.2567797508.

The spelling of 12855131 in words is "twelve million, eight hundred fifty-five thousand, one hundred thirty-one".