30819206913 has 16 divisors (see below), whose sum is σ = 44891198400. Its totient is φ = 18651948480.

The previous prime is 30819206909. The next prime is 30819206939. The reversal of 30819206913 is 31960291803.

It is not a de Polignac number, because 30819206913 - 2² = 30819206909 is a prime.

It is not an unprimeable number, because it can be changed into a prime (30819206953) 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 15 ways as a sum of consecutive naturals, for example, 635218 + ... + 682011.

It is an arithmetic number, because the mean of its divisors is an integer number (2805699900).

Almost surely, 2^30819206913 is an apocalyptic number.

30819206913 is a gapful number since it is divisible by the number (33) formed by its first and last digit.

It is an amenable number.

30819206913 is a deficient number, since it is larger than the sum of its proper divisors (14071991487).

30819206913 is a wasteful number, since it uses less digits than its factorization.

30819206913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1317952.

The product of its (nonzero) digits is 69984, while the sum is 42.

It can be divided in two parts, 30819 and 206913, that added together give a palindrome (237732).

The spelling of 30819206913 in words is "thirty billion, eight hundred nineteen million, two hundred six thousand, nine hundred thirteen".