30831125505 has 16 divisors (see below), whose sum is σ = 50005553280. Its totient is φ = 16218016128.

The previous prime is 30831125483. The next prime is 30831125509. The reversal of 30831125505 is 50552113803.

It is not a de Polignac number, because 30831125505 - 2⁶ = 30831125441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30831125509) 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, 14077045 + ... + 14079234.

It is an arithmetic number, because the mean of its divisors is an integer number (3125347080).

Almost surely, 2^30831125505 is an apocalyptic number.

It is an amenable number.

30831125505 is a deficient number, since it is larger than the sum of its proper divisors (19174427775).

30831125505 is a wasteful number, since it uses less digits than its factorization.

30831125505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28156360.

The product of its (nonzero) digits is 18000, while the sum is 33.

The spelling of 30831125505 in words is "thirty billion, eight hundred thirty-one million, one hundred twenty-five thousand, five hundred five".