2031303213220 has 12 divisors (see below), whose sum is σ = 4265736747804. Its totient is φ = 812521285280.

The previous prime is 2031303213209. The next prime is 2031303213221. The reversal of 2031303213220 is 223123031302.

It can be written as a sum of positive squares in 2 ways, for example, as 1313701084224 + 717602128996 = 1146168^2 + 847114^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2031303213191 and 2031303213200.

It is not an unprimeable number, because it can be changed into a prime (2031303213221) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50782580311 + ... + 50782580350.

It is an arithmetic number, because the mean of its divisors is an integer number (355478062317).

Almost surely, 2^{2031303213220} is an apocalyptic number.

2031303213220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2031303213220 is an abundant number, since it is smaller than the sum of its proper divisors (2234433534584).

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

2031303213220 is a wasteful number, since it uses less digits than its factorization.

2031303213220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 101565160670 (or 101565160668 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 22.

Adding to 2031303213220 its reverse (223123031302), we get a palindrome (2254426244522).

The spelling of 2031303213220 in words is "two trillion, thirty-one billion, three hundred three million, two hundred thirteen thousand, two hundred twenty".