12731697 has 12 divisors (see below), whose sum is σ = 20062224. Its totient is φ = 7716120.

The previous prime is 12731683. The next prime is 12731699. The reversal of 12731697 is 79613721.

It is a happy number.

It is not a de Polignac number, because 12731697 - 2⁴ = 12731681 is a prime.

It is a super-2 number, since 2×12731697² = 324192216999618, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (12731699) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 64203 + ... + 64400.

It is an arithmetic number, because the mean of its divisors is an integer number (1671852).

Almost surely, 2^12731697 is an apocalyptic number.

It is an amenable number.

12731697 is a deficient number, since it is larger than the sum of its proper divisors (7330527).

12731697 is a wasteful number, since it uses less digits than its factorization.

12731697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128620 (or 128617 counting only the distinct ones).

The product of its digits is 15876, while the sum is 36.

The square root of 12731697 is about 3568.1503611815. The cubic root of 12731697 is about 233.5045951283.

The spelling of 12731697 in words is "twelve million, seven hundred thirty-one thousand, six hundred ninety-seven".