2103312100 has 18 divisors (see below), whose sum is σ = 4564187474. Its totient is φ = 841324800.

The previous prime is 2103312089. The next prime is 2103312121. The reversal of 2103312100 is 12133012.

It can be written as a sum of positive squares in 3 ways, for example, as 553472676 + 1549839424 = 23526^2 + 39368^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 10516461 + ... + 10516660.

Almost surely, 2^2103312100 is an apocalyptic number.

2103312100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2103312100 is an abundant number, since it is smaller than the sum of its proper divisors (2460875374).

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

2103312100 is a wasteful number, since it uses less digits than its factorization.

2103312100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21033135 (or 21033128 counting only the distinct ones).

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

The square root of 2103312100 is about 45861.8806853797. The cubic root of 2103312100 is about 1281.2520504429.

Adding to 2103312100 its reverse (12133012), we get a palindrome (2115445112).

It can be divided in two parts, 21033 and 12100, that added together give a palindrome (33133).

The spelling of 2103312100 in words is "two billion, one hundred three million, three hundred twelve thousand, one hundred".