30285821312 has 16 divisors (see below), whose sum is σ = 60335034900. Its totient is φ = 15142910592.

The previous prime is 30285821243. The next prime is 30285821327. The reversal of 30285821312 is 21312858203.

It is a tau number, because it is divible by the number of its divisors (16).

It is a super-3 number, since 3×30285821312³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 118303862 + ... + 118304117.

Almost surely, 2^30285821312 is an apocalyptic number.

30285821312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

30285821312 is a deficient number, since it is larger than the sum of its proper divisors (30049213588).

30285821312 is an equidigital number, since it uses as much as digits as its factorization.

30285821312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 236607993 (or 236607981 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 35.

The spelling of 30285821312 in words is "thirty billion, two hundred eighty-five million, eight hundred twenty-one thousand, three hundred twelve".