12712931 has 8 divisors (see below), whose sum is σ = 15849984. Its totient is φ = 9906120.

The previous prime is 12712927. The next prime is 12712939. The reversal of 12712931 is 13921721.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12712931 - 2² = 12712927 is a prime.

It is a super-2 number, since 2×12712931² = 323237229221522, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12712931.

It is not an unprimeable number, because it can be changed into a prime (12712939) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82475 + ... + 82628.

It is an arithmetic number, because the mean of its divisors is an integer number (1981248).

Almost surely, 2^12712931 is an apocalyptic number.

12712931 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12712931 is a deficient number, since it is larger than the sum of its proper divisors (3137053).

12712931 is a wasteful number, since it uses less digits than its factorization.

12712931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165121.

The product of its digits is 756, while the sum is 26.

The square root of 12712931 is about 3565.5197377101. The cubic root of 12712931 is about 233.3898133116.

The spelling of 12712931 in words is "twelve million, seven hundred twelve thousand, nine hundred thirty-one".