30111212312 has 32 divisors (see below), whose sum is σ = 62013945600. Its totient is φ = 13643064864.

The previous prime is 30111212303. The next prime is 30111212359. The reversal of 30111212312 is 21321211103.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 4303028 + ... + 4310019.

It is an arithmetic number, because the mean of its divisors is an integer number (1937935800).

Almost surely, 2^30111212312 is an apocalyptic number.

It is an amenable number.

30111212312 is an abundant number, since it is smaller than the sum of its proper divisors (31902733288).

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

30111212312 is a wasteful number, since it uses less digits than its factorization.

30111212312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8613095 (or 8613091 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 17.

Adding to 30111212312 its reverse (21321211103), we get a palindrome (51432423415).

The spelling of 30111212312 in words is "thirty billion, one hundred eleven million, two hundred twelve thousand, three hundred twelve".