12319687 has 4 divisors (see below), whose sum is σ = 12581856. Its totient is φ = 12057520.

The previous prime is 12319673. The next prime is 12319711. The reversal of 12319687 is 78691321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78691321 = 2531 ⋅31091.

It is a cyclic number.

It is not a de Polignac number, because 12319687 - 2¹⁵ = 12286919 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 (12319627) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 131014 + ... + 131107.

It is an arithmetic number, because the mean of its divisors is an integer number (3145464).

Almost surely, 2^12319687 is an apocalyptic number.

12319687 is a deficient number, since it is larger than the sum of its proper divisors (262169).

12319687 is an equidigital number, since it uses as much as digits as its factorization.

12319687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262168.

The product of its digits is 18144, while the sum is 37.

The square root of 12319687 is about 3509.9411675981. The cubic root of 12319687 is about 230.9581141299.

The spelling of 12319687 in words is "twelve million, three hundred nineteen thousand, six hundred eighty-seven".