2020311321 has 16 divisors (see below), whose sum is σ = 3095584128. Its totient is φ = 1148083200.

The previous prime is 2020311311. The next prime is 2020311343. The reversal of 2020311321 is 1231130202.

It is not a de Polignac number, because 2020311321 - 2⁶ = 2020311257 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2020311321.

It is not an unprimeable number, because it can be changed into a prime (2020311311) 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, 261960 + ... + 269561.

It is an arithmetic number, because the mean of its divisors is an integer number (193474008).

Almost surely, 2^2020311321 is an apocalyptic number.

2020311321 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

2020311321 is a deficient number, since it is larger than the sum of its proper divisors (1075272807).

2020311321 is a wasteful number, since it uses less digits than its factorization.

2020311321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531712.

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2020311321 is about 44947.8733757227. The cubic root of 2020311321 is about 1264.1718026186.

Adding to 2020311321 its reverse (1231130202), we get a palindrome (3251441523).

The spelling of 2020311321 in words is "two billion, twenty million, three hundred eleven thousand, three hundred twenty-one".