30312242 has 8 divisors (see below), whose sum is σ = 46213932. Its totient is φ = 14907600.

The previous prime is 30312211. The next prime is 30312263. The reversal of 30312242 is 24221303.

It can be written as a sum of positive squares in 2 ways, for example, as 23804641 + 6507601 = 4879^2 + 2551^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 30312242.

It is an unprimeable 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 3 ways as a sum of consecutive naturals, for example, 124109 + ... + 124352.

Almost surely, 2^30312242 is an apocalyptic number.

30312242 is a deficient number, since it is larger than the sum of its proper divisors (15901690).

30312242 is a wasteful number, since it uses less digits than its factorization.

30312242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248524.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 30312242 is about 5505.6554559834. The cubic root of 30312242 is about 311.7975415098.

Adding to 30312242 its reverse (24221303), we get a palindrome (54533545).

The spelling of 30312242 in words is "thirty million, three hundred twelve thousand, two hundred forty-two".