30420105312 has 24 divisors (see below), whose sum is σ = 79852776696. Its totient is φ = 10140035072.

The previous prime is 30420105299. The next prime is 30420105323. The reversal of 30420105312 is 21350102403.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 158437953 + ... + 158438144.

It is an arithmetic number, because the mean of its divisors is an integer number (3327199029).

Almost surely, 2^30420105312 is an apocalyptic number.

30420105312 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

30420105312 is an abundant number, since it is smaller than the sum of its proper divisors (49432671384).

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

30420105312 is a wasteful number, since it uses less digits than its factorization.

30420105312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316876110 (or 316876102 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 30420105312 its reverse (21350102403), we get a palindrome (51770207715).

The spelling of 30420105312 in words is "thirty billion, four hundred twenty million, one hundred five thousand, three hundred twelve".