12311872 has 14 divisors (see below), whose sum is σ = 24431498. Its totient is φ = 6155904.

The previous prime is 12311869. The next prime is 12311881. The reversal of 12311872 is 27811321.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 12278016 + 33856 = 3504^2 + 184^2 .

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 96123 + ... + 96250.

It is an arithmetic number, because the mean of its divisors is an integer number (1745107).

Almost surely, 2^12311872 is an apocalyptic number.

It is an amenable number.

12311872 is a deficient number, since it is larger than the sum of its proper divisors (12119626).

12311872 is an equidigital number, since it uses as much as digits as its factorization.

12311872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192385 (or 192375 counting only the distinct ones).

The product of its digits is 672, while the sum is 25.

The square root of 12311872 is about 3508.8277244687. The cubic root of 12311872 is about 230.9092676657.

The spelling of 12311872 in words is "twelve million, three hundred eleven thousand, eight hundred seventy-two".