12320397 has 16 divisors (see below), whose sum is σ = 18401280. Its totient is φ = 8146656.

The previous prime is 12320369. The next prime is 12320401. The reversal of 12320397 is 79302321.

12320397 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12320397 - 2⁸ = 12320141 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a self number, because there is not a number n which added to its sum of digits gives 12320397.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12320197) 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 15 ways as a sum of consecutive naturals, for example, 1633 + ... + 5225.

It is an arithmetic number, because the mean of its divisors is an integer number (1150080).

Almost surely, 2^12320397 is an apocalyptic number.

It is an amenable number.

12320397 is a deficient number, since it is larger than the sum of its proper divisors (6080883).

12320397 is a wasteful number, since it uses less digits than its factorization.

12320397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3729 (or 3723 counting only the distinct ones).

The product of its (nonzero) digits is 2268, while the sum is 27.

The square root of 12320397 is about 3510.0423074373. The cubic root of 12320397 is about 230.9625508528.

The spelling of 12320397 in words is "twelve million, three hundred twenty thousand, three hundred ninety-seven".