30811529019 has 4 divisors (see below), whose sum is σ = 41082038696. Its totient is φ = 20541019344.

The previous prime is 30811528981. The next prime is 30811529053. The reversal of 30811529019 is 91092511803.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 30811529019 - 2¹⁵ = 30811496251 is a prime.

It is a super-2 number, since 2×30811529019² (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 (30811529059) 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, 5135254834 + ... + 5135254839.

It is an arithmetic number, because the mean of its divisors is an integer number (10270509674).

Almost surely, 2^30811529019 is an apocalyptic number.

30811529019 is a deficient number, since it is larger than the sum of its proper divisors (10270509677).

30811529019 is a wasteful number, since it uses less digits than its factorization.

30811529019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10270509676.

The product of its (nonzero) digits is 19440, while the sum is 39.

The spelling of 30811529019 in words is "thirty billion, eight hundred eleven million, five hundred twenty-nine thousand, nineteen".