2311011203020 has 48 divisors (see below), whose sum is σ = 5501516559840. Its totient is φ = 808386103296.

The previous prime is 2311011202999. The next prime is 2311011203021. The reversal of 2311011203020 is 203021101132.

It is a junction number, because it is equal to n+sod(n) for n = 2311011202985 and 2311011203003.

It is not an unprimeable number, because it can be changed into a prime (2311011203021) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 233903077 + ... + 233912956.

It is an arithmetic number, because the mean of its divisors is an integer number (114614928330).

Almost surely, 2^{2311011203020} is an apocalyptic number.

2311011203020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2311011203020 is an abundant number, since it is smaller than the sum of its proper divisors (3190505356820).

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

2311011203020 is a wasteful number, since it uses less digits than its factorization.

2311011203020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 467816074 (or 467816072 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 2311011203020 its reverse (203021101132), we get a palindrome (2514032304152).

The spelling of 2311011203020 in words is "two trillion, three hundred eleven billion, eleven million, two hundred three thousand, twenty".