2102811300 has 72 divisors (see below), whose sum is σ = 6760157600. Its totient is φ = 560748960.

The previous prime is 2102811247. The next prime is 2102811307. The reversal of 2102811300 is 31182012.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (2102811307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 386710 + ... + 392109.

Almost surely, 2^2102811300 is an apocalyptic number.

2102811300 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102811300 is an abundant number, since it is smaller than the sum of its proper divisors (4657346300).

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

2102811300 is a wasteful number, since it uses less digits than its factorization.

2102811300 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 778842 (or 778829 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 18.

The square root of 2102811300 is about 45856.4204883024. The cubic root of 2102811300 is about 1281.1503533846.

Adding to 2102811300 its reverse (31182012), we get a palindrome (2133993312).

The spelling of 2102811300 in words is "two billion, one hundred two million, eight hundred eleven thousand, three hundred".