306316242 has 40 divisors (see below), whose sum is σ = 687951792. Its totient is φ = 101871000.

The previous prime is 306316237. The next prime is 306316247. The reversal of 306316242 is 242613603.

306316242 is a `hidden beast` number, since 3 + 0 + 6 + 31 + 624 + 2 = 666.

It is an interprime number because it is at equal distance from previous prime (306316237) and next prime (306316247).

It is a super-2 number, since 2×306316242² = 187659280226005128, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (306316247) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 77617 + ... + 81467.

Almost surely, 2^306316242 is an apocalyptic number.

306316242 is an abundant number, since it is smaller than the sum of its proper divisors (381635550).

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

306316242 is a wasteful number, since it uses less digits than its factorization.

306316242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4356 (or 4347 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 306316242 is about 17501.8925262384. The cubic root of 306316242 is about 674.0984705281.

Adding to 306316242 its reverse (242613603), we get a palindrome (548929845).

The spelling of 306316242 in words is "three hundred six million, three hundred sixteen thousand, two hundred forty-two".