302230009 has 4 divisors (see below), whose sum is σ = 307932516. Its totient is φ = 296527504.

The previous prime is 302230003. The next prime is 302230021. The reversal of 302230009 is 900032203.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 900032203 = 7 ⋅128576029.

It can be written as a sum of positive squares in 2 ways, for example, as 120384784 + 181845225 = 10972^2 + 13485^2 .

It is a cyclic number.

It is not a de Polignac number, because 302230009 - 2⁹ = 302229497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (302230003) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2851174 + ... + 2851279.

It is an arithmetic number, because the mean of its divisors is an integer number (76983129).

Almost surely, 2^302230009 is an apocalyptic number.

It is an amenable number.

302230009 is a deficient number, since it is larger than the sum of its proper divisors (5702507).

302230009 is an equidigital number, since it uses as much as digits as its factorization.

302230009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5702506.

The product of its (nonzero) digits is 324, while the sum is 19.

The square root of 302230009 is about 17384.7637027369. The cubic root of 302230009 is about 671.0875698146.

The spelling of 302230009 in words is "three hundred two million, two hundred thirty thousand, nine".