12387911 has 8 divisors (see below), whose sum is σ = 12617280. Its totient is φ = 12160512.

The previous prime is 12387887. The next prime is 12387937. The reversal of 12387911 is 11978321.

12387911 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 12387911 - 2⁶ = 12387847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12387971) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18071 + ... + 18743.

It is an arithmetic number, because the mean of its divisors is an integer number (1577160).

Almost surely, 2^12387911 is an apocalyptic number.

12387911 is a deficient number, since it is larger than the sum of its proper divisors (229369).

12387911 is an equidigital number, since it uses as much as digits as its factorization.

12387911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 985.

The product of its digits is 3024, while the sum is 32.

The square root of 12387911 is about 3519.6464311064. The cubic root of 12387911 is about 231.3836630733.

The spelling of 12387911 in words is "twelve million, three hundred eighty-seven thousand, nine hundred eleven".