30231133212 has 48 divisors (see below), whose sum is σ = 80844809472. Its totient is φ = 8612989440.

The previous prime is 30231133189. The next prime is 30231133237. The reversal of 30231133212 is 21233113203.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 480114 + ... + 539417.

It is an arithmetic number, because the mean of its divisors is an integer number (1684266864).

Almost surely, 2^30231133212 is an apocalyptic number.

It is an amenable number.

30231133212 is an abundant number, since it is smaller than the sum of its proper divisors (50613676260).

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

30231133212 is a wasteful number, since it uses less digits than its factorization.

30231133212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1019898 (or 1019896 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 21.

Adding to 30231133212 its reverse (21233113203), we get a palindrome (51464246415).

The spelling of 30231133212 in words is "thirty billion, two hundred thirty-one million, one hundred thirty-three thousand, two hundred twelve".