302130306 has 24 divisors (see below), whose sum is σ = 658015020. Its totient is φ = 100187136.

The previous prime is 302130293. The next prime is 302130317. The reversal of 302130306 is 603031203.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 229795281 + 72335025 = 15159^2 + 8505^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 40011 + ... + 46958.

Almost surely, 2^302130306 is an apocalyptic number.

302130306 is an abundant number, since it is smaller than the sum of its proper divisors (355884714).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

302130306 is a wasteful number, since it uses less digits than its factorization.

302130306 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87170 (or 87167 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 302130306 is about 17381.8959265093. The cubic root of 302130306 is about 671.0137664188.

Adding to 302130306 its reverse (603031203), we get a palindrome (905161509).

The spelling of 302130306 in words is "three hundred two million, one hundred thirty thousand, three hundred six".