20001231332311 has 8 divisors (see below), whose sum is σ = 20047771450784. Its totient is φ = 19954692817920.

The previous prime is 20001231332279. The next prime is 20001231332323. The reversal of 20001231332311 is 11323313210002.

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 20001231332311 - 2⁵ = 20001231332279 is a prime.

It is a super-2 number, since 2×20001231332311² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20001231332011) 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 7 ways as a sum of consecutive naturals, for example, 26691646 + ... + 27430756.

It is an arithmetic number, because the mean of its divisors is an integer number (2505971431348).

Almost surely, 2^{20001231332311} is an apocalyptic number.

20001231332311 is a deficient number, since it is larger than the sum of its proper divisors (46540118473).

20001231332311 is an equidigital number, since it uses as much as digits as its factorization.

20001231332311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 802041.

The product of its (nonzero) digits is 648, while the sum is 22.

Adding to 20001231332311 its reverse (11323313210002), we get a palindrome (31324544542313).

The spelling of 20001231332311 in words is "twenty trillion, one billion, two hundred thirty-one million, three hundred thirty-two thousand, three hundred eleven".