30881250520 has 32 divisors (see below), whose sum is σ = 69652735200. Its totient is φ = 12322291968.

The previous prime is 30881250509. The next prime is 30881250523. The reversal of 30881250520 is 2505218803.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30881250523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 927444 + ... + 960163.

It is an arithmetic number, because the mean of its divisors is an integer number (2176647975).

Almost surely, 2^30881250520 is an apocalyptic number.

It is an amenable number.

30881250520 is an abundant number, since it is smaller than the sum of its proper divisors (38771484680).

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

30881250520 is a wasteful number, since it uses less digits than its factorization.

30881250520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1888027 (or 1888023 counting only the distinct ones).

The product of its (nonzero) digits is 19200, while the sum is 34.

The spelling of 30881250520 in words is "thirty billion, eight hundred eighty-one million, two hundred fifty thousand, five hundred twenty".