20331030311 has 8 divisors (see below), whose sum is σ = 20765626560. Its totient is φ = 19896518368.

The previous prime is 20331030283. The next prime is 20331030323. The reversal of 20331030311 is 11303013302.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20331030311 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 20331030311.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20331030611) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 823925 + ... + 848241.

It is an arithmetic number, because the mean of its divisors is an integer number (2595703320).

Almost surely, 2^20331030311 is an apocalyptic number.

20331030311 is a deficient number, since it is larger than the sum of its proper divisors (434596249).

20331030311 is a wasteful number, since it uses less digits than its factorization.

20331030311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42153.

The product of its (nonzero) digits is 162, while the sum is 17.

Adding to 20331030311 its reverse (11303013302), we get a palindrome (31634043613).

The spelling of 20331030311 in words is "twenty billion, three hundred thirty-one million, thirty thousand, three hundred eleven".