30303120312 has 24 divisors (see below), whose sum is σ = 82070951040. Its totient is φ = 10101040080.

The previous prime is 30303120293. The next prime is 30303120329. The reversal of 30303120312 is 21302130303.

30303120312 is a `hidden beast` number, since 30 + 303 + 1 + 20 + 312 = 666.

It is a tau number, because it is divible by the number of its divisors (24).

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 210438264 + ... + 210438407.

It is an arithmetic number, because the mean of its divisors is an integer number (3419622960).

Almost surely, 2^30303120312 is an apocalyptic number.

It is an amenable number.

30303120312 is an abundant number, since it is smaller than the sum of its proper divisors (51767830728).

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

30303120312 is a wasteful number, since it uses less digits than its factorization.

30303120312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 420876683 (or 420876676 counting only the distinct ones).

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

Adding to 30303120312 its reverse (21302130303), we get a palindrome (51605250615).

Subtracting from 30303120312 its reverse (21302130303), we obtain a palindrome (9000990009).

The spelling of 30303120312 in words is "thirty billion, three hundred three million, one hundred twenty thousand, three hundred twelve".