30381305250 has 64 divisors (see below), whose sum is σ = 77445268992. Its totient is φ = 7929296000.

The previous prime is 30381305221. The next prime is 30381305261. The reversal of 30381305250 is 5250318303.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 395691 + ... + 466190.

It is an arithmetic number, because the mean of its divisors is an integer number (1210082328).

Almost surely, 2^30381305250 is an apocalyptic number.

30381305250 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

30381305250 is an abundant number, since it is smaller than the sum of its proper divisors (47063963742).

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

30381305250 is a wasteful number, since it uses less digits than its factorization.

30381305250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 861948 (or 861938 counting only the distinct ones).

The product of its (nonzero) digits is 10800, while the sum is 30.

The spelling of 30381305250 in words is "thirty billion, three hundred eighty-one million, three hundred five thousand, two hundred fifty".