2031220443 has 8 divisors (see below), whose sum is σ = 3095193088. Its totient is φ = 1160697384.

The previous prime is 2031220427. The next prime is 2031220447. The reversal of 2031220443 is 3440221302.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2031220443 - 2⁴ = 2031220427 is a prime.

It is a super-2 number, since 2×2031220443² = 8251712976122232498, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (21), and also a Moran number because the ratio is a prime number: 96724783 = 2031220443 / (2 + 0 + 3 + 1 + 2 + 2 + 0 + 4 + 4 + 3).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2031220447) 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 7 ways as a sum of consecutive naturals, for example, 48362371 + ... + 48362412.

It is an arithmetic number, because the mean of its divisors is an integer number (386899136).

Almost surely, 2^2031220443 is an apocalyptic number.

2031220443 is a deficient number, since it is larger than the sum of its proper divisors (1063972645).

2031220443 is an equidigital number, since it uses as much as digits as its factorization.

2031220443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96724793.

The product of its (nonzero) digits is 1152, while the sum is 21.

The square root of 2031220443 is about 45069.0630366330. The cubic root of 2031220443 is about 1266.4431119859.

Adding to 2031220443 its reverse (3440221302), we get a palindrome (5471441745).

It can be divided in two parts, 20312 and 20443, that added together give a triangular number (40755 = T₂₈₅).

The spelling of 2031220443 in words is "two billion, thirty-one million, two hundred twenty thousand, four hundred forty-three".