12321619 has 8 divisors (see below), whose sum is σ = 12665520. Its totient is φ = 11982336.

The previous prime is 12321611. The next prime is 12321637. The reversal of 12321619 is 91612321.

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

It is a cyclic number.

It is not a de Polignac number, because 12321619 - 2³ = 12321611 is a prime.

It is a super-2 number, since 2×12321619² = 303644589562322, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 12321593 and 12321602.

It is not an unprimeable number, because it can be changed into a prime (12321611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4647 + ... + 6799.

It is an arithmetic number, because the mean of its divisors is an integer number (1583190).

Almost surely, 2^12321619 is an apocalyptic number.

12321619 is a deficient number, since it is larger than the sum of its proper divisors (343901).

12321619 is an equidigital number, since it uses as much as digits as its factorization.

12321619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2309.

The product of its digits is 648, while the sum is 25.

The square root of 12321619 is about 3510.2163750971. The cubic root of 12321619 is about 230.9701866161.

The spelling of 12321619 in words is "twelve million, three hundred twenty-one thousand, six hundred nineteen".