2000031231220 has 72 divisors (see below), whose sum is σ = 4745334511008. Its totient is φ = 702205257600.

The previous prime is 2000031231199. The next prime is 2000031231229. The reversal of 2000031231220 is 221321300002.

It is a junction number, because it is equal to n+sod(n) for n = 2000031231194 and 2000031231203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2000031231229) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5219886 + ... + 5589925.

It is an arithmetic number, because the mean of its divisors is an integer number (65907423764).

Almost surely, 2^{2000031231220} is an apocalyptic number.

2000031231220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2000031231220 is an abundant number, since it is smaller than the sum of its proper divisors (2745303279788).

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

2000031231220 is a wasteful number, since it uses less digits than its factorization.

2000031231220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10809889 (or 10809858 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

Adding to 2000031231220 its reverse (221321300002), we get a palindrome (2221352531222).

The spelling of 2000031231220 in words is "two trillion, thirty-one million, two hundred thirty-one thousand, two hundred twenty".