213243400100 has 36 divisors (see below), whose sum is σ = 463560215664. Its totient is φ = 85145832480.

The previous prime is 213243400081. The next prime is 213243400133. The reversal of 213243400100 is 1004342312.

It is a Harshad number since it is a multiple of its sum of digits (20).

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 11 ways as a sum of consecutive naturals, for example, 1837514 + ... + 1950113.

Almost surely, 2^213243400100 is an apocalyptic number.

213243400100 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213243400100 is an abundant number, since it is smaller than the sum of its proper divisors (250316815564).

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

213243400100 is a wasteful number, since it uses less digits than its factorization.

213243400100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3788204 (or 3788197 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 213243400100 its reverse (1004342312), we get a palindrome (214247742412).

The spelling of 213243400100 in words is "two hundred thirteen billion, two hundred forty-three million, four hundred thousand, one hundred".