30303131312 has 120 divisors (see below), whose sum is σ = 67145251536. Its totient is φ = 13193736192.

The previous prime is 30303131297. The next prime is 30303131323. The reversal of 30303131312 is 21313130303.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4218668 + ... + 4225844.

Almost surely, 2^30303131312 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 30303131312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (33572625768).

30303131312 is an abundant number, since it is smaller than the sum of its proper divisors (36842120224).

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

30303131312 is a wasteful number, since it uses less digits than its factorization.

30303131312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7283 (or 7258 counting only the distinct ones).

The product of its (nonzero) digits is 486, while the sum is 20.

Adding to 30303131312 its reverse (21313130303), we get a palindrome (51616261615).

The spelling of 30303131312 in words is "thirty billion, three hundred three million, one hundred thirty-one thousand, three hundred twelve".