2100312103 has 4 divisors (see below), whose sum is σ = 2100533688. Its totient is φ = 2100090520.

The previous prime is 2100312029. The next prime is 2100312199. The reversal of 2100312103 is 3012130012.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2100312103 is a prime.

It is a super-2 number, since 2×2100312103² = 8822621860016565218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2100312703) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 95908 + ... + 115753.

It is an arithmetic number, because the mean of its divisors is an integer number (525133422).

Almost surely, 2^2100312103 is an apocalyptic number.

2100312103 is a deficient number, since it is larger than the sum of its proper divisors (221585).

2100312103 is an equidigital number, since it uses as much as digits as its factorization.

2100312103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221584.

The product of its (nonzero) digits is 36, while the sum is 13.

The square root of 2100312103 is about 45829.1621459524. The cubic root of 2100312103 is about 1280.6426019400.

Adding to 2100312103 its reverse (3012130012), we get a palindrome (5112442115).

The spelling of 2100312103 in words is "two billion, one hundred million, three hundred twelve thousand, one hundred three".