12319491 has 8 divisors (see below), whose sum is σ = 16671424. Its totient is φ = 8090280.

The previous prime is 12319481. The next prime is 12319511. The reversal of 12319491 is 19491321.

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

It is not a de Polignac number, because 12319491 - 2⁵ = 12319459 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12319471) 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, 30445 + ... + 30846.

It is an arithmetic number, because the mean of its divisors is an integer number (2083928).

Almost surely, 2^12319491 is an apocalyptic number.

12319491 is a deficient number, since it is larger than the sum of its proper divisors (4351933).

12319491 is an equidigital number, since it uses as much as digits as its factorization.

12319491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61361.

The product of its digits is 1944, while the sum is 30.

The square root of 12319491 is about 3509.9132467912. The cubic root of 12319491 is about 230.9568893144.

The spelling of 12319491 in words is "twelve million, three hundred nineteen thousand, four hundred ninety-one".