30811742208 has 672 divisors, whose sum is σ = 106482684672. Its totient is φ = 8493465600.

The previous prime is 30811742111. The next prime is 30811742257. The reversal of 30811742208 is 80224711803.

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 47 ways as a sum of consecutive naturals, for example, 505110498 + ... + 505110558.

It is an arithmetic number, because the mean of its divisors is an integer number (158456376).

Almost surely, 2^30811742208 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 30811742208, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (53241342336).

30811742208 is an abundant number, since it is smaller than the sum of its proper divisors (75670942464).

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

30811742208 is a wasteful number, since it uses less digits than its factorization.

30811742208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154 (or 127 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 36.

The spelling of 30811742208 in words is "thirty billion, eight hundred eleven million, seven hundred forty-two thousand, two hundred eight".