2021313210 has 48 divisors (see below), whose sum is σ = 5643180576. Its totient is φ = 462014112.

The previous prime is 2021313179. The next prime is 2021313211. The reversal of 2021313210 is 123131202.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 2021313210.

It is not an unprimeable number, because it can be changed into a prime (2021313211) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 686052 + ... + 688991.

It is an arithmetic number, because the mean of its divisors is an integer number (117566262).

Almost surely, 2^2021313210 is an apocalyptic number.

2021313210 is an abundant number, since it is smaller than the sum of its proper divisors (3621867366).

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

2021313210 is a wasteful number, since it uses less digits than its factorization.

2021313210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1375067 (or 1375060 counting only the distinct ones).

The product of its (nonzero) digits is 72, while the sum is 15.

The square root of 2021313210 is about 44959.0170043786. The cubic root of 2021313210 is about 1264.3807391493.

Adding to 2021313210 its reverse (123131202), we get a palindrome (2144444412).

The spelling of 2021313210 in words is "two billion, twenty-one million, three hundred thirteen thousand, two hundred ten".