10308491 has 2 divisors, whose sum is σ = 10308492. Its totient is φ = 10308490.

The previous prime is 10308479. The next prime is 10308497. The reversal of 10308491 is 19480301.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 10308491 - 2²² = 6114187 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 10308491.

It is not a weakly prime, because it can be changed into another prime (10308497) 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, 5154245 + 5154246.

It is an arithmetic number, because the mean of its divisors is an integer number (5154246).

Almost surely, 2^10308491 is an apocalyptic number.

10308491 is a deficient number, since it is larger than the sum of its proper divisors (1).

10308491 is an equidigital number, since it uses as much as digits as its factorization.

10308491 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 10308491 is about 3210.6838835363. The cubic root of 10308491 is about 217.6364827972.

Adding to 10308491 its reverse (19480301), we get a palindrome (29788792).

The spelling of 10308491 in words is "ten million, three hundred eight thousand, four hundred ninety-one".