12320351 has 2 divisors, whose sum is σ = 12320352. Its totient is φ = 12320350.

The previous prime is 12320339. The next prime is 12320369. The reversal of 12320351 is 15302321.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12320351 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12322351) 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 as a sum of consecutive naturals, namely, 6160175 + 6160176.

It is an arithmetic number, because the mean of its divisors is an integer number (6160176).

Almost surely, 2^12320351 is an apocalyptic number.

12320351 is a deficient number, since it is larger than the sum of its proper divisors (1).

12320351 is an equidigital number, since it uses as much as digits as its factorization.

12320351 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 12320351 is about 3510.0357548036. The cubic root of 12320351 is about 230.9622634083.

Adding to 12320351 its reverse (15302321), we get a palindrome (27622672).

The spelling of 12320351 in words is "twelve million, three hundred twenty thousand, three hundred fifty-one".