213610530 has 32 divisors (see below), whose sum is σ = 585903744. Its totient is φ = 48825216.

The previous prime is 213610469. The next prime is 213610561. The reversal of 213610530 is 35016312.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a junction number, because it is equal to n+sod(n) for n = 213610497 and 213610506.

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, 508387 + ... + 508806.

It is an arithmetic number, because the mean of its divisors is an integer number (18309492).

Almost surely, 2^213610530 is an apocalyptic number.

213610530 is an abundant number, since it is smaller than the sum of its proper divisors (372293214).

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

213610530 is a wasteful number, since it uses less digits than its factorization.

213610530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1017210.

The product of its (nonzero) digits is 540, while the sum is 21.

The square root of 213610530 is about 14615.4209655418. The cubic root of 213610530 is about 597.7793188766.

Adding to 213610530 its reverse (35016312), we get a palindrome (248626842).

The spelling of 213610530 in words is "two hundred thirteen million, six hundred ten thousand, five hundred thirty".