2031211020 has 48 divisors (see below), whose sum is σ = 5690522880. Its totient is φ = 541358016.

The previous prime is 2031211019. The next prime is 2031211027. The reversal of 2031211020 is 201121302.

It is a Harshad number since it is a multiple of its sum of digits (12).

It is a junction number, because it is equal to n+sod(n) for n = 2031210987 and 2031211005.

It is not an unprimeable number, because it can be changed into a prime (2031211027) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 114039 + ... + 130641.

It is an arithmetic number, because the mean of its divisors is an integer number (118552560).

Almost surely, 2^2031211020 is an apocalyptic number.

2031211020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2031211020 is an abundant number, since it is smaller than the sum of its proper divisors (3659311860).

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

2031211020 is a wasteful number, since it uses less digits than its factorization.

2031211020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18654 (or 18652 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 12.

The square root of 2031211020 is about 45068.9584969522. The cubic root of 2031211020 is about 1266.4411536047.

Adding to 2031211020 its reverse (201121302), we get a palindrome (2232332322).

The spelling of 2031211020 in words is "two billion, thirty-one million, two hundred eleven thousand, twenty".