12931971 has 8 divisors (see below), whose sum is σ = 18569040. Its totient is φ = 7958112.

The previous prime is 12931937. The next prime is 12931987. The reversal of 12931971 is 17913921.

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

It is not a de Polignac number, because 12931971 - 2⁷ = 12931843 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12931921) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 165756 + ... + 165833.

It is an arithmetic number, because the mean of its divisors is an integer number (2321130).

Almost surely, 2^12931971 is an apocalyptic number.

12931971 is a deficient number, since it is larger than the sum of its proper divisors (5637069).

12931971 is a wasteful number, since it uses less digits than its factorization.

12931971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 331605.

The product of its digits is 3402, while the sum is 33.

The square root of 12931971 is about 3596.1049762208. The cubic root of 12931971 is about 234.7226000972.

The spelling of 12931971 in words is "twelve million, nine hundred thirty-one thousand, nine hundred seventy-one".