30331213308 has 144 divisors (see below), whose sum is σ = 86209643520. Its totient is φ = 8912592000.

The previous prime is 30331213307. The next prime is 30331213379. The reversal of 30331213308 is 80331213303.

30331213308 is a `hidden beast` number, since 3 + 0 + 331 + 21 + 3 + 308 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30331213307) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2021233 + ... + 2036183.

It is an arithmetic number, because the mean of its divisors is an integer number (598678080).

Almost surely, 2^30331213308 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30331213308, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (43104821760).

30331213308 is an abundant number, since it is smaller than the sum of its proper divisors (55878430212).

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

30331213308 is a wasteful number, since it uses less digits than its factorization.

30331213308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15128 (or 15123 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 27.

The spelling of 30331213308 in words is "thirty billion, three hundred thirty-one million, two hundred thirteen thousand, three hundred eight".