12321887 has 2 divisors, whose sum is σ = 12321888. Its totient is φ = 12321886.

The previous prime is 12321877. The next prime is 12321893. The reversal of 12321887 is 78812321.

12321887 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12321887 - 2¹⁰ = 12320863 is a prime.

It is a super-3 number, since 3×12321887³ (a number of 22 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12321847) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6160943 + 6160944.

It is an arithmetic number, because the mean of its divisors is an integer number (6160944).

Almost surely, 2^12321887 is an apocalyptic number.

12321887 is a deficient number, since it is larger than the sum of its proper divisors (1).

12321887 is an equidigital number, since it uses as much as digits as its factorization.

12321887 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5376, while the sum is 32.

The square root of 12321887 is about 3510.2545491745. The cubic root of 12321887 is about 230.9718611677.

The spelling of 12321887 in words is "twelve million, three hundred twenty-one thousand, eight hundred eighty-seven".