30872395811 has 12 divisors (see below), whose sum is σ = 32811288120. Its totient is φ = 29042158080.

The previous prime is 30872395721. The next prime is 30872395823. The reversal of 30872395811 is 11859327803.

It is not a de Polignac number, because 30872395811 - 2²⁶ = 30805286947 is a prime.

It is a super-2 number, since 2×30872395811² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30872391811) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 590795 + ... + 640923.

It is an arithmetic number, because the mean of its divisors is an integer number (2734274010).

Almost surely, 2^30872395811 is an apocalyptic number.

30872395811 is a deficient number, since it is larger than the sum of its proper divisors (1938892309).

30872395811 is a wasteful number, since it uses less digits than its factorization.

30872395811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52294 (or 52277 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 47.

The spelling of 30872395811 in words is "thirty billion, eight hundred seventy-two million, three hundred ninety-five thousand, eight hundred eleven".