12713931 has 6 divisors (see below), whose sum is σ = 18364580. Its totient is φ = 8475948.

The previous prime is 12713929. The next prime is 12713933. The reversal of 12713931 is 13931721.

12713931 is a `hidden beast` number, since 1 + 271 + 393 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (12713929) and next prime (12713933).

It is not a de Polignac number, because 12713931 - 2¹ = 12713929 is a prime.

It is a super-2 number, since 2×12713931² = 323288082945522, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12713895 and 12713904.

It is not an unprimeable number, because it can be changed into a prime (12713933) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 706321 + ... + 706338.

Almost surely, 2^12713931 is an apocalyptic number.

12713931 is a deficient number, since it is larger than the sum of its proper divisors (5650649).

12713931 is a wasteful number, since it uses less digits than its factorization.

12713931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1412665 (or 1412662 counting only the distinct ones).

The product of its digits is 1134, while the sum is 27.

The square root of 12713931 is about 3565.6599669626. The cubic root of 12713931 is about 233.3959326373.

The spelling of 12713931 in words is "twelve million, seven hundred thirteen thousand, nine hundred thirty-one".