12331971 has 6 divisors (see below), whose sum is σ = 17812860. Its totient is φ = 8221308.

The previous prime is 12331967. The next prime is 12331993. The reversal of 12331971 is 17913321.

It is not a de Polignac number, because 12331971 - 2² = 12331967 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12331951) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 685101 + ... + 685118.

It is an arithmetic number, because the mean of its divisors is an integer number (2968810).

Almost surely, 2^12331971 is an apocalyptic number.

12331971 is a deficient number, since it is larger than the sum of its proper divisors (5480889).

12331971 is a wasteful number, since it uses less digits than its factorization.

12331971 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1370225 (or 1370222 counting only the distinct ones).

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

The square root of 12331971 is about 3511.6906184913. The cubic root of 12331971 is about 231.0348516595.

The spelling of 12331971 in words is "twelve million, three hundred thirty-one thousand, nine hundred seventy-one".