12717381 has 8 divisors (see below), whose sum is σ = 17414944. Its totient is φ = 8249040.

The previous prime is 12717361. The next prime is 12717407. The reversal of 12717381 is 18371721.

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

It is not a de Polignac number, because 12717381 - 2⁶ = 12717317 is a prime.

It is a super-2 number, since 2×12717381² = 323463558998322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12717311) 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, 57175 + ... + 57396.

It is an arithmetic number, because the mean of its divisors is an integer number (2176868).

Almost surely, 2^12717381 is an apocalyptic number.

It is an amenable number.

12717381 is a deficient number, since it is larger than the sum of its proper divisors (4697563).

12717381 is a wasteful number, since it uses less digits than its factorization.

12717381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114611.

The product of its digits is 2352, while the sum is 30.

The square root of 12717381 is about 3566.1437155561. The cubic root of 12717381 is about 233.4170418480.

The spelling of 12717381 in words is "twelve million, seven hundred seventeen thousand, three hundred eighty-one".