213321030 has 32 divisors (see below), whose sum is σ = 551353824. Its totient is φ = 52509696.

The previous prime is 213321023. The next prime is 213321079. The reversal of 213321030 is 30123312.

It is a Harshad number since it is a multiple of its sum of digits (15).

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 15 ways as a sum of consecutive naturals, for example, 273099 + ... + 273878.

It is an arithmetic number, because the mean of its divisors is an integer number (17229807).

Almost surely, 2^213321030 is an apocalyptic number.

213321030 is an abundant number, since it is smaller than the sum of its proper divisors (338032794).

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

213321030 is a wasteful number, since it uses less digits than its factorization.

213321030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547000.

The product of its (nonzero) digits is 108, while the sum is 15.

The square root of 213321030 is about 14605.5136849068. The cubic root of 213321030 is about 597.5091459417.

Adding to 213321030 its reverse (30123312), we get a palindrome (243444342).

The spelling of 213321030 in words is "two hundred thirteen million, three hundred twenty-one thousand, thirty".