213323020 has 24 divisors (see below), whose sum is σ = 451403568. Its totient is φ = 84676800.

The previous prime is 213322981. The next prime is 213323029. The reversal of 213323020 is 20323312.

It is a junction number, because it is equal to n+sod(n) for n = 213322985 and 213323003.

It is not an unprimeable number, because it can be changed into a prime (213323029) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 38091 + ... + 43330.

It is an arithmetic number, because the mean of its divisors is an integer number (18808482).

Almost surely, 2^213323020 is an apocalyptic number.

213323020 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213323020 is an abundant number, since it is smaller than the sum of its proper divisors (238080548).

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

213323020 is a wasteful number, since it uses less digits than its factorization.

213323020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81561 (or 81559 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 213323020 is about 14605.5818097055. The cubic root of 213323020 is about 597.5110039231.

Adding to 213323020 its reverse (20323312), we get a palindrome (233646332).

The spelling of 213323020 in words is "two hundred thirteen million, three hundred twenty-three thousand, twenty".