2020103311 has 4 divisors (see below), whose sum is σ = 2020201624. Its totient is φ = 2020005000.

The previous prime is 2020103291. The next prime is 2020103329. The reversal of 2020103311 is 1133010202.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 1133010202 = 2 ⋅566505101.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2020103311 is a prime.

It is a super-2 number, since 2×2020103311² = 8161634774226325442, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2020103291 and 2020103300.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2020103711) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5280 + ... + 63781.

It is an arithmetic number, because the mean of its divisors is an integer number (505050406).

Almost surely, 2^2020103311 is an apocalyptic number.

2020103311 is a deficient number, since it is larger than the sum of its proper divisors (98313).

2020103311 is an equidigital number, since it uses as much as digits as its factorization.

2020103311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98312.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 2020103311 is about 44945.5594135839. The cubic root of 2020103311 is about 1264.1284150148.

Adding to 2020103311 its reverse (1133010202), we get a palindrome (3153113513).

The spelling of 2020103311 in words is "two billion, twenty million, one hundred three thousand, three hundred eleven".