331213221323 has 2 divisors, whose sum is σ = 331213221324. Its totient is φ = 331213221322.

The previous prime is 331213221289. The next prime is 331213221347. The reversal of 331213221323 is 323122312133.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 331213221323 - 2¹² = 331213217227 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 331213221292 and 331213221301.

It is not a weakly prime, because it can be changed into another prime (331213220323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165606610661 + 165606610662.

It is an arithmetic number, because the mean of its divisors is an integer number (165606610662).

Almost surely, 2^331213221323 is an apocalyptic number.

331213221323 is a deficient number, since it is larger than the sum of its proper divisors (1).

331213221323 is an equidigital number, since it uses as much as digits as its factorization.

331213221323 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3888, while the sum is 26.

Adding to 331213221323 its reverse (323122312133), we get a palindrome (654335533456).

The spelling of 331213221323 in words is "three hundred thirty-one billion, two hundred thirteen million, two hundred twenty-one thousand, three hundred twenty-three".