309230 has 24 divisors (see below), whose sum is σ = 596808. Its totient is φ = 115328.

The previous prime is 309223. The next prime is 309241. The reversal of 309230 is 32903.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an alternating number because its digits alternate between odd and even.

It is a junction number, because it is equal to n+sod(n) for n = 309199 and 309208.

It is a congruent number.

It is an unprimeable number.

309230 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

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 11 ways as a sum of consecutive naturals, for example, 2837 + ... + 2943.

It is an arithmetic number, because the mean of its divisors is an integer number (24867).

2³⁰⁹²³⁰ is an apocalyptic number.

309230 is a deficient number, since it is larger than the sum of its proper divisors (287578).

309230 is a wasteful number, since it uses less digits than its factorization.

309230 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148 (or 131 counting only the distinct ones).

The product of its (nonzero) digits is 162, while the sum is 17.

The square root of 309230 is about 556.0845259491. The cubic root of 309230 is about 67.6229127656.

The spelling of 309230 in words is "three hundred nine thousand, two hundred thirty".