12931395 has 16 divisors (see below), whose sum is σ = 20735232. Its totient is φ = 6881760.

The previous prime is 12931393. The next prime is 12931409. The reversal of 12931395 is 59313921.

It is not a de Polignac number, because 12931395 - 2¹ = 12931393 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12931393) 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, 11634 + ... + 12696.

It is an arithmetic number, because the mean of its divisors is an integer number (1295952).

Almost surely, 2^12931395 is an apocalyptic number.

12931395 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

12931395 is a deficient number, since it is larger than the sum of its proper divisors (7803837).

12931395 is a wasteful number, since it uses less digits than its factorization.

12931395 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1882.

The product of its digits is 7290, while the sum is 33.

The square root of 12931395 is about 3596.0248886792. The cubic root of 12931395 is about 234.7191151367.

The spelling of 12931395 in words is "twelve million, nine hundred thirty-one thousand, three hundred ninety-five".