2031303220 has 24 divisors (see below), whose sum is σ = 4267020744. Its totient is φ = 812276736.

The previous prime is 2031303217. The next prime is 2031303227. The reversal of 2031303220 is 223031302.

It can be written as a sum of positive squares in 4 ways, for example, as 4682896 + 2026620324 = 2164^2 + 45018^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2031303194 and 2031303203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2031303227) 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, 62472 + ... + 89248.

It is an arithmetic number, because the mean of its divisors is an integer number (177792531).

Almost surely, 2^2031303220 is an apocalyptic number.

2031303220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2031303220 is an abundant number, since it is smaller than the sum of its proper divisors (2235717524).

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

2031303220 is a wasteful number, since it uses less digits than its factorization.

2031303220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30579 (or 30577 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 2031303220 is about 45069.9813623214. The cubic root of 2031303220 is about 1266.4603152619.

Adding to 2031303220 its reverse (223031302), we get a palindrome (2254334522).

The spelling of 2031303220 in words is "two billion, thirty-one million, three hundred three thousand, two hundred twenty".