2123430100 has 36 divisors (see below), whose sum is σ = 5026740768. Its totient is φ = 772156000.

The previous prime is 2123430091. The next prime is 2123430103. The reversal of 2123430100 is 10343212.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2123430103) 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 11 ways as a sum of consecutive naturals, for example, 964096 + ... + 966295.

It is an arithmetic number, because the mean of its divisors is an integer number (139631688).

Almost surely, 2^2123430100 is an apocalyptic number.

2123430100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2123430100 is an abundant number, since it is smaller than the sum of its proper divisors (2903310668).

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

2123430100 is a wasteful number, since it uses less digits than its factorization.

2123430100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1930416 (or 1930409 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 16.

The square root of 2123430100 is about 46080.6911840524. The cubic root of 2123430100 is about 1285.3241169417.

Adding to 2123430100 its reverse (10343212), we get a palindrome (2133773312).

The spelling of 2123430100 in words is "two billion, one hundred twenty-three million, four hundred thirty thousand, one hundred".