30800000000 has 396 divisors, whose sum is σ = 95953075872. Its totient is φ = 9600000000.

The previous prime is 30799999973. The next prime is 30800000009. The reversal of 30800000000 is 803.

It is a Harshad number since it is a multiple of its sum of digits (11).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30800000009) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2799999995 + ... + 2800000005.

Almost surely, 2^30800000000 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 30800000000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (47976537936).

30800000000 is an abundant number, since it is smaller than the sum of its proper divisors (65153075872).

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

30800000000 is an frugal number, since it uses more digits than its factorization.

30800000000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78 (or 25 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

Adding to 30800000000 its reverse (803), we get a palindrome (30800000803).

The spelling of 30800000000 in words is "thirty billion, eight hundred million", and thus it is an aban number.