12388311 has 12 divisors (see below), whose sum is σ = 19270888. Its totient is φ = 7623504.

The previous prime is 12388309. The next prime is 12388339. The reversal of 12388311 is 11388321.

12388311 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12388311 - 2¹ = 12388309 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12388381) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52825 + ... + 53058.

Almost surely, 2^12388311 is an apocalyptic number.

12388311 is a deficient number, since it is larger than the sum of its proper divisors (6882577).

12388311 is a wasteful number, since it uses less digits than its factorization.

12388311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105902 (or 105899 counting only the distinct ones).

The product of its digits is 1152, while the sum is 27.

The square root of 12388311 is about 3519.7032545372. The cubic root of 12388311 is about 231.3861534708.

The spelling of 12388311 in words is "twelve million, three hundred eighty-eight thousand, three hundred eleven".