2031220000 has 60 divisors (see below), whose sum is σ = 4997155086. Its totient is φ = 812480000.

The previous prime is 2031219979. The next prime is 2031220003. The reversal of 2031220000 is 221302.

It can be written as a sum of positive squares in 5 ways, for example, as 77933584 + 1953286416 = 8828^2 + 44196^2 .

It is a Harshad number since it is a multiple of its sum of digits (10).

It is not an unprimeable number, because it can be changed into a prime (2031220003) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 30781 + ... + 70780.

Almost surely, 2^2031220000 is an apocalyptic number.

2031220000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2031220000 is an abundant number, since it is smaller than the sum of its proper divisors (2965935086).

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

2031220000 is an equidigital number, since it uses as much as digits as its factorization.

2031220000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101591 (or 101568 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 10.

The square root of 2031220000 is about 45069.0581219532. The cubic root of 2031220000 is about 1266.4430199174.

Adding to 2031220000 its reverse (221302), we get a palindrome (2031441302).

The spelling of 2031220000 in words is "two billion, thirty-one million, two hundred twenty thousand".