12319911 has 8 divisors (see below), whose sum is σ = 18251760. Its totient is φ = 8213256.

The previous prime is 12319907. The next prime is 12319913. The reversal of 12319911 is 11991321.

It is not a de Polignac number, because 12319911 - 2² = 12319907 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27), and also a Moran number because the ratio is a prime number: 456293 = 12319911 / (1 + 2 + 3 + 1 + 9 + 9 + 1 + 1).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12319913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228120 + ... + 228173.

It is an arithmetic number, because the mean of its divisors is an integer number (2281470).

Almost surely, 2^12319911 is an apocalyptic number.

12319911 is a deficient number, since it is larger than the sum of its proper divisors (5931849).

12319911 is an equidigital number, since it uses as much as digits as its factorization.

12319911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 456302 (or 456296 counting only the distinct ones).

The product of its digits is 486, while the sum is 27.

The square root of 12319911 is about 3509.9730768198. The cubic root of 12319911 is about 230.9595139031.

The spelling of 12319911 in words is "twelve million, three hundred nineteen thousand, nine hundred eleven".