10320391 has 2 divisors, whose sum is σ = 10320392. Its totient is φ = 10320390.

The previous prime is 10320379. The next prime is 10320437. The reversal of 10320391 is 19302301.

It is a weak prime.

It is an emirp because it is prime and its reverse (19302301) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 10320391 - 2⁷ = 10320263 is a 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 (10320341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5160195 + 5160196.

It is an arithmetic number, because the mean of its divisors is an integer number (5160196).

Almost surely, 2^10320391 is an apocalyptic number.

10320391 is a deficient number, since it is larger than the sum of its proper divisors (1).

10320391 is an equidigital number, since it uses as much as digits as its factorization.

10320391 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 162, while the sum is 19.

The square root of 10320391 is about 3212.5365367572. The cubic root of 10320391 is about 217.7201962528.

Adding to 10320391 its reverse (19302301), we get a palindrome (29622692).

The spelling of 10320391 in words is "ten million, three hundred twenty thousand, three hundred ninety-one".