20320331021311 has 8 divisors (see below), whose sum is σ = 20569907401344. Its totient is φ = 20070867810840.

The previous prime is 20320331021303. The next prime is 20320331021317. The reversal of 20320331021311 is 11312013302302.

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 20320331021311 - 2³ = 20320331021303 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 (20320331021317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 27931045 + ... + 28649326.

It is an arithmetic number, because the mean of its divisors is an integer number (2571238425168).

Almost surely, 2^{20320331021311} is an apocalyptic number.

20320331021311 is a deficient number, since it is larger than the sum of its proper divisors (249576380033).

20320331021311 is an equidigital number, since it uses as much as digits as its factorization.

20320331021311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56584781.

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

Adding to 20320331021311 its reverse (11312013302302), we get a palindrome (31632344323613).

The spelling of 20320331021311 in words is "twenty trillion, three hundred twenty billion, three hundred thirty-one million, twenty-one thousand, three hundred eleven".