20012330311 has 4 divisors (see below), whose sum is σ = 20048916472. Its totient is φ = 19975744152.

The previous prime is 20012330293. The next prime is 20012330321. The reversal of 20012330311 is 11303321002.

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 20012330311 - 2³¹ = 17864846663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20012330321) 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, 18292260 + ... + 18293353.

It is an arithmetic number, because the mean of its divisors is an integer number (5012229118).

Almost surely, 2^20012330311 is an apocalyptic number.

20012330311 is a deficient number, since it is larger than the sum of its proper divisors (36586161).

20012330311 is an equidigital number, since it uses as much as digits as its factorization.

20012330311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36586160.

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

Adding to 20012330311 its reverse (11303321002), we get a palindrome (31315651313).

The spelling of 20012330311 in words is "twenty billion, twelve million, three hundred thirty thousand, three hundred eleven".