30531904887 has 16 divisors (see below), whose sum is σ = 45493217280. Its totient is φ = 18052862400.

The previous prime is 30531904873. The next prime is 30531904889. The reversal of 30531904887 is 78840913503.

It is not a de Polignac number, because 30531904887 - 2¹¹ = 30531902839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30531904889) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11281687 + ... + 11284392.

It is an arithmetic number, because the mean of its divisors is an integer number (2843326080).

Almost surely, 2^30531904887 is an apocalyptic number.

30531904887 is a deficient number, since it is larger than the sum of its proper divisors (14961312393).

30531904887 is a wasteful number, since it uses less digits than its factorization.

30531904887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22566134.

The product of its (nonzero) digits is 725760, while the sum is 48.

The spelling of 30531904887 in words is "thirty billion, five hundred thirty-one million, nine hundred four thousand, eight hundred eighty-seven".