2102431100 has 72 divisors (see below), whose sum is σ = 5688052608. Its totient is φ = 655300800.

The previous prime is 2102431099. The next prime is 2102431139. The reversal of 2102431100 is 11342012.

It is a Harshad number since it is a multiple of its sum of digits (14).

It is a congruent number.

It is an unprimeable number.

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, 128822 + ... + 144221.

Almost surely, 2^2102431100 is an apocalyptic number.

2102431100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2102431100 is an abundant number, since it is smaller than the sum of its proper divisors (3585621508).

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

2102431100 is a wasteful number, since it uses less digits than its factorization.

2102431100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 273075 (or 273068 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 2102431100 is about 45852.2747527317. The cubic root of 2102431100 is about 1281.0731356898.

Adding to 2102431100 its reverse (11342012), we get a palindrome (2113773112).

The spelling of 2102431100 in words is "two billion, one hundred two million, four hundred thirty-one thousand, one hundred".