30810888940 has 96 divisors (see below), whose sum is σ = 70953583680. Its totient is φ = 11169100800.

The previous prime is 30810888929. The next prime is 30810888949. The reversal of 30810888940 is 4988801803.

It is not an unprimeable number, because it can be changed into a prime (30810888949) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10481991 + ... + 10484929.

It is an arithmetic number, because the mean of its divisors is an integer number (739099830).

Almost surely, 2^30810888940 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 30810888940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35476791840).

30810888940 is an abundant number, since it is smaller than the sum of its proper divisors (40142694740).

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

30810888940 is a wasteful number, since it uses less digits than its factorization.

30810888940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3683 (or 3681 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 49.

The spelling of 30810888940 in words is "thirty billion, eight hundred ten million, eight hundred eighty-eight thousand, nine hundred forty".