301309 has 4 divisors (see below), whose sum is σ = 308700. Its totient is φ = 293920.

The previous prime is 301303. The next prime is 301319. The reversal of 301309 is 903103.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 96100 + 205209 = 310^2 + 453^2 .

It is a cyclic number.

It is not a de Polignac number, because 301309 - 2⁷ = 301181 is a prime.

It is a super-2 number, since 2×301309² = 181574226962, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 301292 and 301301.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (301303) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3634 + ... + 3715.

It is an arithmetic number, because the mean of its divisors is an integer number (77175).

2³⁰¹³⁰⁹ is an apocalyptic number.

It is an amenable number.

301309 is a deficient number, since it is larger than the sum of its proper divisors (7391).

301309 is an equidigital number, since it uses as much as digits as its factorization.

301309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7390.

The product of its (nonzero) digits is 81, while the sum is 16.

The square root of 301309 is about 548.9162048983. The cubic root of 301309 is about 67.0405190416.

The spelling of 301309 in words is "three hundred one thousand, three hundred nine".