30811102689 has 4 divisors (see below), whose sum is σ = 41081470256. Its totient is φ = 20540735124.

The previous prime is 30811102643. The next prime is 30811102727. The reversal of 30811102689 is 98620111803.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a de Polignac number, because none of the positive numbers 2^k-30811102689 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30811100689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5135183779 + ... + 5135183784.

It is an arithmetic number, because the mean of its divisors is an integer number (10270367564).

Almost surely, 2^30811102689 is an apocalyptic number.

It is an amenable number.

30811102689 is a deficient number, since it is larger than the sum of its proper divisors (10270367567).

30811102689 is a wasteful number, since it uses less digits than its factorization.

30811102689 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10270367566.

The product of its (nonzero) digits is 20736, while the sum is 39.

The spelling of 30811102689 in words is "thirty billion, eight hundred eleven million, one hundred two thousand, six hundred eighty-nine".