2020311 has 12 divisors (see below), whose sum is σ = 2997592. Its totient is φ = 1310256.

The previous prime is 2020309. The next prime is 2020313. The reversal of 2020311 is 1130202.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2020309) and next prime (2020313).

It is not a de Polignac number, because 2020311 - 2¹ = 2020309 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 2020293 and 2020302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020313) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2701 + ... + 3366.

2^2020311 is an apocalyptic number.

2020311 is a deficient number, since it is larger than the sum of its proper divisors (977281).

2020311 is a wasteful number, since it uses less digits than its factorization.

2020311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6110 (or 6107 counting only the distinct ones).

The product of its (nonzero) digits is 12, while the sum is 9.

The square root of 2020311 is about 1421.3764455625. The cubic root of 2020311 is about 126.4171735665.

Adding to 2020311 its reverse (1130202), we get a palindrome (3150513).

The spelling of 2020311 in words is "two million, twenty thousand, three hundred eleven".