12931982 has 12 divisors (see below), whose sum is σ = 22565160. Its totient is φ = 5542236.

The previous prime is 12931937. The next prime is 12931987. The reversal of 12931982 is 28913921.

12931982 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12931987) 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, 65882 + ... + 66077.

It is an arithmetic number, because the mean of its divisors is an integer number (1880430).

Almost surely, 2^12931982 is an apocalyptic number.

12931982 is a deficient number, since it is larger than the sum of its proper divisors (9633178).

12931982 is a wasteful number, since it uses less digits than its factorization.

12931982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131975 (or 131968 counting only the distinct ones).

The product of its digits is 7776, while the sum is 35.

The square root of 12931982 is about 3596.1065056530. The cubic root of 12931982 is about 234.7226666492.

The spelling of 12931982 in words is "twelve million, nine hundred thirty-one thousand, nine hundred eighty-two".