10211309 has 2 divisors, whose sum is σ = 10211310. Its totient is φ = 10211308.

The previous prime is 10211293. The next prime is 10211321. The reversal of 10211309 is 90311201.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10048900 + 162409 = 3170^2 + 403^2 .

It is a cyclic number.

It is not a de Polignac number, because 10211309 - 2⁴ = 10211293 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10211359) 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 as a sum of consecutive naturals, namely, 5105654 + 5105655.

It is an arithmetic number, because the mean of its divisors is an integer number (5105655).

Almost surely, 2^10211309 is an apocalyptic number.

It is an amenable number.

10211309 is a deficient number, since it is larger than the sum of its proper divisors (1).

10211309 is an equidigital number, since it uses as much as digits as its factorization.

10211309 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 54, while the sum is 17.

The square root of 10211309 is about 3195.5138866855. The cubic root of 10211309 is about 216.9504087942.

It can be divided in two parts, 102 and 11309, that added together give a palindrome (11411).

The spelling of 10211309 in words is "ten million, two hundred eleven thousand, three hundred nine".