12320249 has 4 divisors (see below), whose sum is σ = 12855936. Its totient is φ = 11784564.

The previous prime is 12320239. The next prime is 12320267. The reversal of 12320249 is 94202321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12320249 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 535663 = 12320249 / (1 + 2 + 3 + 2 + 0 + 2 + 4 + 9).

It is a Duffinian number.

It is a plaindrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (12320219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 267809 + ... + 267854.

It is an arithmetic number, because the mean of its divisors is an integer number (3213984).

Almost surely, 2^12320249 is an apocalyptic number.

It is an amenable number.

12320249 is a deficient number, since it is larger than the sum of its proper divisors (535687).

12320249 is an equidigital number, since it uses as much as digits as its factorization.

12320249 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 535686.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 12320249 is about 3510.0212250071. The cubic root of 12320249 is about 230.9616260288.

The spelling of 12320249 in words is "twelve million, three hundred twenty thousand, two hundred forty-nine".