12531895 has 16 divisors (see below), whose sum is σ = 15966720. Its totient is φ = 9421984.

The previous prime is 12531889. The next prime is 12531913. The reversal of 12531895 is 59813521.

It is a cyclic number.

It is not a de Polignac number, because 12531895 - 2⁷ = 12531767 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12531895.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5862 + ... + 7708.

It is an arithmetic number, because the mean of its divisors is an integer number (997920).

Almost surely, 2^12531895 is an apocalyptic number.

12531895 is a deficient number, since it is larger than the sum of its proper divisors (3434825).

12531895 is a wasteful number, since it uses less digits than its factorization.

12531895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1934.

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

The square root of 12531895 is about 3540.0416664215. The cubic root of 12531895 is about 232.2766653315.

The spelling of 12531895 in words is "twelve million, five hundred thirty-one thousand, eight hundred ninety-five".