12331889 has 2 divisors, whose sum is σ = 12331890. Its totient is φ = 12331888.

The previous prime is 12331871. The next prime is 12331897. The reversal of 12331889 is 98813321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7246864 + 5085025 = 2692^2 + 2255^2 .

It is a cyclic number.

It is not a de Polignac number, because 12331889 - 2²⁰ = 11283313 is a prime.

It is not a weakly prime, because it can be changed into another prime (12331829) 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 as a sum of consecutive naturals, namely, 6165944 + 6165945.

It is an arithmetic number, because the mean of its divisors is an integer number (6165945).

Almost surely, 2^12331889 is an apocalyptic number.

It is an amenable number.

12331889 is a deficient number, since it is larger than the sum of its proper divisors (1).

12331889 is an equidigital number, since it uses as much as digits as its factorization.

12331889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 10368, while the sum is 35.

The square root of 12331889 is about 3511.6789431837. The cubic root of 12331889 is about 231.0343395787.

The spelling of 12331889 in words is "twelve million, three hundred thirty-one thousand, eight hundred eighty-nine".