2100300030 has 112 divisors (see below), whose sum is σ = 5807292624. Its totient is φ = 546341760.

The previous prime is 2100300029. The next prime is 2100300043. The reversal of 2100300030 is 300030012.

It is a happy number.

It is a super-2 number, since 2×2100300030² = 8822520432036001800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (9).

It is a junction number, because it is equal to n+sod(n) for n = 2100299985 and 2100300021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 295377 + ... + 302403.

It is an arithmetic number, because the mean of its divisors is an integer number (51850827).

Almost surely, 2^2100300030 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2100300030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2903646312).

2100300030 is an abundant number, since it is smaller than the sum of its proper divisors (3706992594).

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

2100300030 is an equidigital number, since it uses as much as digits as its factorization.

2100300030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7093 (or 7078 counting only the distinct ones).

The product of its (nonzero) digits is 18, while the sum is 9.

The square root of 2100300030 is about 45829.0304283213. The cubic root of 2100300030 is about 1280.6401481416.

Adding to 2100300030 its reverse (300030012), we get a palindrome (2400330042).

The spelling of 2100300030 in words is "two billion, one hundred million, three hundred thousand, thirty".