213021030 has 32 divisors (see below), whose sum is σ = 511711200. Its totient is φ = 56754432.

The previous prime is 213021013. The next prime is 213021041. The reversal of 213021030 is 30120312.

It is a happy number.

213021030 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 213020997 and 213021015.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 40386 + ... + 45354.

It is an arithmetic number, because the mean of its divisors is an integer number (15990975).

Almost surely, 2^213021030 is an apocalyptic number.

213021030 is an abundant number, since it is smaller than the sum of its proper divisors (298690170).

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

213021030 is a wasteful number, since it uses less digits than its factorization.

213021030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6408.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 213021030 is about 14595.2399774721. The cubic root of 213021030 is about 597.2289159693.

Adding to 213021030 its reverse (30120312), we get a palindrome (243141342).

The spelling of 213021030 in words is "two hundred thirteen million, twenty-one thousand, thirty".