213311223 has 24 divisors (see below), whose sum is σ = 340430688. Its totient is φ = 128020992.

The previous prime is 213311221. The next prime is 213311311. The reversal of 213311223 is 322113312.

It is not a de Polignac number, because 213311223 - 2¹ = 213311221 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 213311196 and 213311205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213311221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26790 + ... + 33827.

It is an arithmetic number, because the mean of its divisors is an integer number (14184612).

Almost surely, 2^213311223 is an apocalyptic number.

213311223 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

213311223 is a deficient number, since it is larger than the sum of its proper divisors (127119465).

213311223 is a wasteful number, since it uses less digits than its factorization.

213311223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60663 (or 60660 counting only the distinct ones).

The product of its digits is 216, while the sum is 18.

The square root of 213311223 is about 14605.1779516718. The cubic root of 213311223 is about 597.4999893793.

Adding to 213311223 its reverse (322113312), we get a palindrome (535424535).

The spelling of 213311223 in words is "two hundred thirteen million, three hundred eleven thousand, two hundred twenty-three".