20211231032311 has 16 divisors (see below), whose sum is σ = 22089500928000. Its totient is φ = 18339786680800.

The previous prime is 20211231032261. The next prime is 20211231032351. The reversal of 20211231032311 is 11323013211202.

It is a cyclic number.

It is not a de Polignac number, because 20211231032311 - 2²⁷ = 20211096814583 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20211231032351) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 35768085 + ... + 36328753.

It is an arithmetic number, because the mean of its divisors is an integer number (1380593808000).

Almost surely, 2^{20211231032311} is an apocalyptic number.

20211231032311 is a deficient number, since it is larger than the sum of its proper divisors (1878269895689).

20211231032311 is a wasteful number, since it uses less digits than its factorization.

20211231032311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 566750.

The product of its (nonzero) digits is 432, while the sum is 22.

Adding to 20211231032311 its reverse (11323013211202), we get a palindrome (31534244243513).

The spelling of 20211231032311 in words is "twenty trillion, two hundred eleven billion, two hundred thirty-one million, thirty-two thousand, three hundred eleven".