213020310 has 16 divisors (see below), whose sum is σ = 511248816. Its totient is φ = 56805408.

The previous prime is 213020257. The next prime is 213020317. The reversal of 213020310 is 13020312.

It is a happy number.

It is a super-2 number, since 2×213020310² = 90755304944992200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213020317) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3550309 + ... + 3550368.

It is an arithmetic number, because the mean of its divisors is an integer number (31953051).

Almost surely, 2^213020310 is an apocalyptic number.

213020310 is an abundant number, since it is smaller than the sum of its proper divisors (298228506).

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

213020310 is a wasteful number, since it uses less digits than its factorization.

213020310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7100687.

The product of its (nonzero) digits is 36, while the sum is 12.

The square root of 213020310 is about 14595.2153118753. The cubic root of 213020310 is about 597.2282431010.

Adding to 213020310 its reverse (13020312), we get a palindrome (226040622).

The spelling of 213020310 in words is "two hundred thirteen million, twenty thousand, three hundred ten".