213323323220 has 48 divisors (see below), whose sum is σ = 512038775808. Its totient is φ = 73130453760.

The previous prime is 213323323219. The next prime is 213323323247. The reversal of 213323323220 is 22323323312.

It is a self number, because there is not a number n which added to its sum of digits gives 213323323220.

It is a congruent number.

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, 1106840 + ... + 1285200.

It is an arithmetic number, because the mean of its divisors is an integer number (10667474496).

Almost surely, 2^213323323220 is an apocalyptic number.

213323323220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213323323220 is an abundant number, since it is smaller than the sum of its proper divisors (298715452588).

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

213323323220 is a wasteful number, since it uses less digits than its factorization.

213323323220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186920 (or 186918 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 26.

Adding to 213323323220 its reverse (22323323312), we get a palindrome (235646646532).

The spelling of 213323323220 in words is "two hundred thirteen billion, three hundred twenty-three million, three hundred twenty-three thousand, two hundred twenty".