30318685 has 8 divisors (see below), whose sum is σ = 36743256. Its totient is φ = 24014400.

The previous prime is 30318679. The next prime is 30318689. The reversal of 30318685 is 58681303.

30318685 = 3893² + 3894².

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 15155449 + 15163236 = 3893^2 + 3894^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 30318685 - 2⁵ = 30318653 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 30318685.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30318689) 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 7 ways as a sum of consecutive naturals, for example, 29514 + ... + 30523.

It is an arithmetic number, because the mean of its divisors is an integer number (4592907).

Almost surely, 2^30318685 is an apocalyptic number.

30318685 is the 3894-th centered square number.

It is an amenable number.

30318685 is a deficient number, since it is larger than the sum of its proper divisors (6424571).

30318685 is a wasteful number, since it uses less digits than its factorization.

30318685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60143.

The product of its (nonzero) digits is 17280, while the sum is 34.

The square root of 30318685 is about 5506.2405505027. The cubic root of 30318685 is about 311.8196312565.

Adding to 30318685 its reverse (58681303), we get a palindrome (88999988).

The spelling of 30318685 in words is "thirty million, three hundred eighteen thousand, six hundred eighty-five".