213315630 has 32 divisors (see below), whose sum is σ = 558499968. Its totient is φ = 51712800.

The previous prime is 213315617. The next prime is 213315631. The reversal of 213315630 is 36513312.

It is a happy number.

213315630 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 213315630.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213315631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 322876 + ... + 323535.

It is an arithmetic number, because the mean of its divisors is an integer number (17453124).

Almost surely, 2^213315630 is an apocalyptic number.

213315630 is an abundant number, since it is smaller than the sum of its proper divisors (345184338).

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

213315630 is a wasteful number, since it uses less digits than its factorization.

213315630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646432.

The product of its (nonzero) digits is 1620, while the sum is 24.

The square root of 213315630 is about 14605.3288220430. The cubic root of 213315630 is about 597.5041041250.

Adding to 213315630 its reverse (36513312), we get a palindrome (249828942).

The spelling of 213315630 in words is "two hundred thirteen million, three hundred fifteen thousand, six hundred thirty".