20331230011 has 4 divisors (see below), whose sum is σ = 20880722752. Its totient is φ = 19781737272.

The previous prime is 20331230009. The next prime is 20331230039. The reversal of 20331230011 is 11003213302.

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

It is a cyclic number.

It is not a de Polignac number, because 20331230011 - 2¹ = 20331230009 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20331230111) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 274746315 + ... + 274746388.

It is an arithmetic number, because the mean of its divisors is an integer number (5220180688).

Almost surely, 2^20331230011 is an apocalyptic number.

20331230011 is a deficient number, since it is larger than the sum of its proper divisors (549492741).

20331230011 is an equidigital number, since it uses as much as digits as its factorization.

20331230011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 549492740.

The product of its (nonzero) digits is 108, while the sum is 16.

Adding to 20331230011 its reverse (11003213302), we get a palindrome (31334443313).

The spelling of 20331230011 in words is "twenty billion, three hundred thirty-one million, two hundred thirty thousand, eleven".