2311022020 has 12 divisors (see below), whose sum is σ = 4853146284. Its totient is φ = 924408800.

The previous prime is 2311022011. The next prime is 2311022039. The reversal of 2311022020 is 202201132.

It can be written as a sum of positive squares in 2 ways, for example, as 369562176 + 1941459844 = 19224^2 + 44062^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57775531 + ... + 57775570.

It is an arithmetic number, because the mean of its divisors is an integer number (404428857).

Almost surely, 2^2311022020 is an apocalyptic number.

2311022020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2311022020 is an abundant number, since it is smaller than the sum of its proper divisors (2542124264).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2311022020 is a wasteful number, since it uses less digits than its factorization.

2311022020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115551110 (or 115551108 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 2311022020 is about 48073.0903936911. The cubic root of 2311022020 is about 1322.1113326437. Note that the first 3 decimals are identical.

Adding to 2311022020 its reverse (202201132), we get a palindrome (2513223152).

The spelling of 2311022020 in words is "two billion, three hundred eleven million, twenty-two thousand, twenty".