30681233280 has 192 divisors, whose sum is σ = 106041546000. Its totient is φ = 8174297088.

The previous prime is 30681233267. The next prime is 30681233299. The reversal of 30681233280 is 8233218603.

30681233280 is a `hidden beast` number, since 306 + 8 + 1 + 23 + 328 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (192).

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

It is a congruent number.

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, 10061196 + ... + 10064244.

Almost surely, 2^30681233280 is an apocalyptic number.

30681233280 is a gapful number since it is divisible by the number (30) 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 30681233280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53020773000).

30681233280 is an abundant number, since it is smaller than the sum of its proper divisors (75360312720).

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

30681233280 is a wasteful number, since it uses less digits than its factorization.

30681233280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4821 (or 4806 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 30681233280 in words is "thirty billion, six hundred eighty-one million, two hundred thirty-three thousand, two hundred eighty".