12304391 has 8 divisors (see below), whose sum is σ = 13651200. Its totient is φ = 10995640.

The previous prime is 12304373. The next prime is 12304403. The reversal of 12304391 is 19340321.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12304391 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 (12304301) 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, 8831 + ... + 10128.

It is an arithmetic number, because the mean of its divisors is an integer number (1706400).

Almost surely, 2^12304391 is an apocalyptic number.

12304391 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

12304391 is a deficient number, since it is larger than the sum of its proper divisors (1346809).

12304391 is a wasteful number, since it uses less digits than its factorization.

12304391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19029.

The product of its (nonzero) digits is 648, while the sum is 23.

The square root of 12304391 is about 3507.7615369349. The cubic root of 12304391 is about 230.8624894496.

It can be divided in two parts, 12 and 304391, that added together give a palindrome (304403).

The spelling of 12304391 in words is "twelve million, three hundred four thousand, three hundred ninety-one".