20339931811 has 8 divisors (see below), whose sum is σ = 21234351600. Its totient is φ = 19458381600.

The previous prime is 20339931797. The next prime is 20339931817. The reversal of 20339931811 is 11813993302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20339931811 - 2⁵ = 20339931779 is a prime.

It is a super-2 number, since 2×20339931811² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20339931817) 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 7 ways as a sum of consecutive naturals, for example, 3214165 + ... + 3220486.

It is an arithmetic number, because the mean of its divisors is an integer number (2654293950).

Almost surely, 2^20339931811 is an apocalyptic number.

20339931811 is a deficient number, since it is larger than the sum of its proper divisors (894419789).

20339931811 is a wasteful number, since it uses less digits than its factorization.

20339931811 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6434789.

The product of its (nonzero) digits is 34992, while the sum is 40.

The spelling of 20339931811 in words is "twenty billion, three hundred thirty-nine million, nine hundred thirty-one thousand, eight hundred eleven".