213223311 has 24 divisors (see below), whose sum is σ = 352379040. Its totient is φ = 121706496.

The previous prime is 213223303. The next prime is 213223313. The reversal of 213223311 is 113322312.

It is not a de Polignac number, because 213223311 - 2³ = 213223303 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (213223313) 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, 92671 + ... + 94943.

It is an arithmetic number, because the mean of its divisors is an integer number (14682460).

Almost surely, 2^213223311 is an apocalyptic number.

213223311 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

213223311 is a deficient number, since it is larger than the sum of its proper divisors (139155729).

213223311 is a wasteful number, since it uses less digits than its factorization.

213223311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3775 (or 3772 counting only the distinct ones).

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

The square root of 213223311 is about 14602.1680239614. The cubic root of 213223311 is about 597.4178955009.

Adding to 213223311 its reverse (113322312), we get a palindrome (326545623).

Subtracting from 213223311 its reverse (113322312), we obtain a palindrome (99900999).

The spelling of 213223311 in words is "two hundred thirteen million, two hundred twenty-three thousand, three hundred eleven".