20321033330311 has 16 divisors (see below), whose sum is σ = 24590278451520. Its totient is φ = 16393358338560.

The previous prime is 20321033330309. The next prime is 20321033330327. The reversal of 20321033330311 is 11303333012302.

It is not a de Polignac number, because 20321033330311 - 2¹ = 20321033330309 is a prime.

It is a super-2 number, since 2×20321033330311² (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 (20321033330341) 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, 41811681 + ... + 42294901.

It is an arithmetic number, because the mean of its divisors is an integer number (1536892403220).

Almost surely, 2^{20321033330311} is an apocalyptic number.

20321033330311 is a deficient number, since it is larger than the sum of its proper divisors (4269245121209).

20321033330311 is a wasteful number, since it uses less digits than its factorization.

20321033330311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 836634.

The product of its (nonzero) digits is 2916, while the sum is 25.

Adding to 20321033330311 its reverse (11303333012302), we get a palindrome (31624366342613).

The spelling of 20321033330311 in words is "twenty trillion, three hundred twenty-one billion, thirty-three million, three hundred thirty thousand, three hundred eleven".