213220323331 has 16 divisors (see below), whose sum is σ = 222230752128. Its totient is φ = 204412377600.

The previous prime is 213220323299. The next prime is 213220323359. The reversal of 213220323331 is 133323022312.

It is a cyclic number.

It is not a de Polignac number, because 213220323331 - 2⁵ = 213220323299 is a prime.

It is a super-2 number, since 2×213220323331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 213220323296 and 213220323305.

It is not an unprimeable number, because it can be changed into a prime (213220323361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 679665 + ... + 942541.

It is an arithmetic number, because the mean of its divisors is an integer number (13889422008).

Almost surely, 2^213220323331 is an apocalyptic number.

213220323331 is a deficient number, since it is larger than the sum of its proper divisors (9010428797).

213220323331 is a wasteful number, since it uses less digits than its factorization.

213220323331 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263262.

The product of its (nonzero) digits is 3888, while the sum is 25.

Adding to 213220323331 its reverse (133323022312), we get a palindrome (346543345643).

The spelling of 213220323331 in words is "two hundred thirteen billion, two hundred twenty million, three hundred twenty-three thousand, three hundred thirty-one".