30313213212 has 24 divisors (see below), whose sum is σ = 71356770576. Its totient is φ = 10014984448.

The previous prime is 30313213127. The next prime is 30313213253. The reversal of 30313213212 is 21231231303.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11176083 + ... + 11178794.

It is an arithmetic number, because the mean of its divisors is an integer number (2973198774).

Almost surely, 2^30313213212 is an apocalyptic number.

It is an amenable number.

30313213212 is an abundant number, since it is smaller than the sum of its proper divisors (41043557364).

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

30313213212 is a wasteful number, since it uses less digits than its factorization.

30313213212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22354997 (or 22354995 counting only the distinct ones).

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

Adding to 30313213212 its reverse (21231231303), we get a palindrome (51544444515).

The spelling of 30313213212 in words is "thirty billion, three hundred thirteen million, two hundred thirteen thousand, two hundred twelve".