2031442220 has 24 divisors (see below), whose sum is σ = 4307450784. Its totient is φ = 804686976.

The previous prime is 2031442159. The next prime is 2031442229. The reversal of 2031442220 is 222441302.

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 = 2031442192 and 2031442201.

It is not an unprimeable number, because it can be changed into a prime (2031442229) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 491009 + ... + 495128.

It is an arithmetic number, because the mean of its divisors is an integer number (179477116).

Almost surely, 2^2031442220 is an apocalyptic number.

2031442220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2031442220 is an abundant number, since it is smaller than the sum of its proper divisors (2276008564).

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

2031442220 is a wasteful number, since it uses less digits than its factorization.

2031442220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 986249 (or 986247 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 2031442220 is about 45071.5233822865. The cubic root of 2031442220 is about 1266.4892021307.

Adding to 2031442220 its reverse (222441302), we get a palindrome (2253883522).

The spelling of 2031442220 in words is "two billion, thirty-one million, four hundred forty-two thousand, two hundred twenty".