12817983 has 16 divisors (see below), whose sum is σ = 18247680. Its totient is φ = 7975296.

The previous prime is 12817979. The next prime is 12818053. The reversal of 12817983 is 38971821.

It is not a de Polignac number, because 12817983 - 2² = 12817979 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12817933) 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, 5488 + ... + 7466.

It is an arithmetic number, because the mean of its divisors is an integer number (1140480).

Almost surely, 2^12817983 is an apocalyptic number.

12817983 is a deficient number, since it is larger than the sum of its proper divisors (5429697).

12817983 is a wasteful number, since it uses less digits than its factorization.

12817983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2126.

The product of its digits is 24192, while the sum is 39.

The square root of 12817983 is about 3580.2210825590. The cubic root of 12817983 is about 234.0309149015.

The spelling of 12817983 in words is "twelve million, eight hundred seventeen thousand, nine hundred eighty-three".