2311232220020 has 24 divisors (see below), whose sum is σ = 4858485370368. Its totient is φ = 923559991200.

The previous prime is 2311232220019. The next prime is 2311232220043. The reversal of 2311232220020 is 200222321132.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a junction number, because it is equal to n+sod(n) for n = 2311232219974 and 2311232220001.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58285736 + ... + 58325375.

It is an arithmetic number, because the mean of its divisors is an integer number (202436890432).

Almost surely, 2^{2311232220020} is an apocalyptic number.

2311232220020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2311232220020 is an abundant number, since it is smaller than the sum of its proper divisors (2547253150348).

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

2311232220020 is a wasteful number, since it uses less digits than its factorization.

2311232220020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116612111 (or 116612109 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 2311232220020 its reverse (200222321132), we get a palindrome (2511454541152).

The spelling of 2311232220020 in words is "two trillion, three hundred eleven billion, two hundred thirty-two million, two hundred twenty thousand, twenty".