30981500244 has 96 divisors (see below), whose sum is σ = 84989072000. Its totient is φ = 9732814848.

The previous prime is 30981500239. The next prime is 30981500257. The reversal of 30981500244 is 44200518903.

30981500244 is a `hidden beast` number, since 30 + 9 + 81 + 500 + 2 + 44 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 30981500199 and 30981500208.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 356922 + ... + 435150.

Almost surely, 2^30981500244 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 30981500244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (42494536000).

30981500244 is an abundant number, since it is smaller than the sum of its proper divisors (54007571756).

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

30981500244 is a wasteful number, since it uses less digits than its factorization.

30981500244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78454 (or 78446 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The spelling of 30981500244 in words is "thirty billion, nine hundred eighty-one million, five hundred thousand, two hundred forty-four".