12319851 has 4 divisors (see below), whose sum is σ = 16426472. Its totient is φ = 8213232.

The previous prime is 12319843. The next prime is 12319859. The reversal of 12319851 is 15891321.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (12319843) and next prime (12319859).

It is not a de Polignac number, because 12319851 - 2³ = 12319843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12319859) 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 3 ways as a sum of consecutive naturals, for example, 2053306 + ... + 2053311.

It is an arithmetic number, because the mean of its divisors is an integer number (4106618).

Almost surely, 2^12319851 is an apocalyptic number.

12319851 is a deficient number, since it is larger than the sum of its proper divisors (4106621).

12319851 is an equidigital number, since it uses as much as digits as its factorization.

12319851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4106620.

The product of its digits is 2160, while the sum is 30.

The square root of 12319851 is about 3509.9645297353. The cubic root of 12319851 is about 230.9591389655.

The spelling of 12319851 in words is "twelve million, three hundred nineteen thousand, eight hundred fifty-one".