213423330 has 32 divisors (see below), whose sum is σ = 513906624. Its totient is φ = 56725056.

The previous prime is 213423307. The next prime is 213423347. The reversal of 213423330 is 33324312.

It is a junction number, because it is equal to n+sod(n) for n = 213423297 and 213423306.

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, 2377 + ... + 20796.

It is an arithmetic number, because the mean of its divisors is an integer number (16059582).

Almost surely, 2^213423330 is an apocalyptic number.

213423330 is an abundant number, since it is smaller than the sum of its proper divisors (300483294).

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

213423330 is a wasteful number, since it uses less digits than its factorization.

213423330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23490.

The product of its (nonzero) digits is 1296, while the sum is 21.

The square root of 213423330 is about 14609.0153672313. The cubic root of 213423330 is about 597.6046442886.

Adding to 213423330 its reverse (33324312), we get a palindrome (246747642).

The spelling of 213423330 in words is "two hundred thirteen million, four hundred twenty-three thousand, three hundred thirty".