219230100 has 54 divisors (see below), whose sum is σ = 687167390. Its totient is φ = 58461120.

The previous prime is 219230029. The next prime is 219230129. The reversal of 219230100 is 1032912.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 1726596 + 217503504 = 1314^2 + 14748^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 120895 + ... + 122694.

Almost surely, 2^219230100 is an apocalyptic number.

219230100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

219230100 is an abundant number, since it is smaller than the sum of its proper divisors (467937290).

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

219230100 is a wasteful number, since it uses less digits than its factorization.

219230100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 243609 (or 243599 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 18.

The square root of 219230100 is about 14806.4209044590. The cubic root of 219230100 is about 602.9760474962.

The spelling of 219230100 in words is "two hundred nineteen million, two hundred thirty thousand, one hundred".