30311012992 has 64 divisors (see below), whose sum is σ = 65627238600. Its totient is φ = 13861269504.

The previous prime is 30311012983. The next prime is 30311013017. The reversal of 30311012992 is 29921011303.

It can be written as a sum of positive squares in 4 ways, for example, as 26469988416 + 3841024576 = 162696^2 + 61976^2 .

It is a tau number, because it is divible by the number of its divisors (64).

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, 97818 + ... + 264934.

Almost surely, 2^30311012992 is an apocalyptic number.

30311012992 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 30311012992, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32813619300).

30311012992 is an abundant number, since it is smaller than the sum of its proper divisors (35316225608).

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

30311012992 is a wasteful number, since it uses less digits than its factorization.

30311012992 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167253 (or 167241 counting only the distinct ones).

The product of its (nonzero) digits is 2916, while the sum is 31.

The spelling of 30311012992 in words is "thirty billion, three hundred eleven million, twelve thousand, nine hundred ninety-two".