213333330 has 128 divisors (see below), whose sum is σ = 622264320. Its totient is φ = 45722880.

The previous prime is 213333319. The next prime is 213333331. The reversal of 213333330 is 33333312.

It is a super-2 number, since 2×213333330² = 91022219377777800, which contains 22 as substring.

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

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 213333297 and 213333306.

It is not an unprimeable number, because it can be changed into a prime (213333331) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 506520 + ... + 506940.

It is an arithmetic number, because the mean of its divisors is an integer number (4861440).

Almost surely, 2^213333330 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 213333330, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (311132160).

213333330 is an abundant number, since it is smaller than the sum of its proper divisors (408930990).

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

213333330 is a wasteful number, since it uses less digits than its factorization.

213333330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 584.

The product of its (nonzero) digits is 1458, while the sum is 21.

The square root of 213333330 is about 14605.9347526956. The cubic root of 213333330 is about 597.5206297622.

Adding to 213333330 its reverse (33333312), we get a palindrome (246666642).

The spelling of 213333330 in words is "two hundred thirteen million, three hundred thirty-three thousand, three hundred thirty".