331212213223 has 4 divisors (see below), whose sum is σ = 336155679160. Its totient is φ = 326268747288.

The previous prime is 331212213221. The next prime is 331212213247. The reversal of 331212213223 is 322312212133.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 331212213223 - 2¹ = 331212213221 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (331212213221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2471732868 + ... + 2471733001.

It is an arithmetic number, because the mean of its divisors is an integer number (84038919790).

Almost surely, 2^331212213223 is an apocalyptic number.

331212213223 is a deficient number, since it is larger than the sum of its proper divisors (4943465937).

331212213223 is an equidigital number, since it uses as much as digits as its factorization.

331212213223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4943465936.

The product of its digits is 2592, while the sum is 25.

Adding to 331212213223 its reverse (322312212133), we get a palindrome (653524425356).

The spelling of 331212213223 in words is "three hundred thirty-one billion, two hundred twelve million, two hundred thirteen thousand, two hundred twenty-three".