30707971211 has 4 divisors (see below), whose sum is σ = 31766866800. Its totient is φ = 29649075624.

The previous prime is 30707971207. The next prime is 30707971213. The reversal of 30707971211 is 11217970703.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11217970703 = 263 ⋅42653881.

It is a cyclic number.

It is not a de Polignac number, because 30707971211 - 2² = 30707971207 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30707971213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 529447751 + ... + 529447808.

It is an arithmetic number, because the mean of its divisors is an integer number (7941716700).

Almost surely, 2^30707971211 is an apocalyptic number.

30707971211 is a deficient number, since it is larger than the sum of its proper divisors (1058895589).

30707971211 is a wasteful number, since it uses less digits than its factorization.

30707971211 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1058895588.

The product of its (nonzero) digits is 18522, while the sum is 38.

The spelling of 30707971211 in words is "thirty billion, seven hundred seven million, nine hundred seventy-one thousand, two hundred eleven".