213012330 has 32 divisors (see below), whose sum is σ = 525049344. Its totient is φ = 55267776.

The previous prime is 213012323. The next prime is 213012347. The reversal of 213012330 is 33210312.

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

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, 94842 + ... + 97061.

It is an arithmetic number, because the mean of its divisors is an integer number (16407792).

Almost surely, 2^213012330 is an apocalyptic number.

213012330 is an abundant number, since it is smaller than the sum of its proper divisors (312037014).

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

213012330 is a wasteful number, since it uses less digits than its factorization.

213012330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191950.

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

The square root of 213012330 is about 14594.9419320530. The cubic root of 213012330 is about 597.2207853756.

Adding to 213012330 its reverse (33210312), we get a palindrome (246222642).

The spelling of 213012330 in words is "two hundred thirteen million, twelve thousand, three hundred thirty".