213312330 has 96 divisors (see below), whose sum is σ = 691486848. Its totient is φ = 44323200.

The previous prime is 213312283. The next prime is 213312361. The reversal of 213312330 is 33213312.

213312330 is a `hidden beast` number, since 2 + 1 + 331 + 2 + 330 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8461 + ... + 22320.

It is an arithmetic number, because the mean of its divisors is an integer number (7202988).

Almost surely, 2^213312330 is an apocalyptic number.

213312330 is an abundant number, since it is smaller than the sum of its proper divisors (478174518).

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

213312330 is a wasteful number, since it uses less digits than its factorization.

213312330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30812 (or 30809 counting only the distinct ones).

The product of its (nonzero) digits is 324, while the sum is 18.

The square root of 213312330 is about 14605.2158491410. The cubic root of 213312330 is about 597.5010229729.

Adding to 213312330 its reverse (33213312), we get a palindrome (246525642).

The spelling of 213312330 in words is "two hundred thirteen million, three hundred twelve thousand, three hundred thirty".