309227 has 4 divisors (see below), whose sum is σ = 319920. Its totient is φ = 298536.

The previous prime is 309223. The next prime is 309241. The reversal of 309227 is 722903.

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

It is a cyclic number.

It is not a de Polignac number, because 309227 - 2² = 309223 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 13.

It is a zygodrome in base 13.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 309227.

It is not an unprimeable number, because it can be changed into a prime (309223) 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 in 3 ways as a sum of consecutive naturals, for example, 5303 + ... + 5360.

It is an arithmetic number, because the mean of its divisors is an integer number (79980).

2³⁰⁹²²⁷ is an apocalyptic number.

309227 is a deficient number, since it is larger than the sum of its proper divisors (10693).

309227 is a wasteful number, since it uses less digits than its factorization.

309227 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10692.

The product of its (nonzero) digits is 756, while the sum is 23.

The square root of 309227 is about 556.0818285109. The cubic root of 309227 is about 67.6226940833.

The spelling of 309227 in words is "three hundred nine thousand, two hundred twenty-seven".