2313221213 has 2 divisors, whose sum is σ = 2313221214. Its totient is φ = 2313221212.

The previous prime is 2313221171. The next prime is 2313221227. The reversal of 2313221213 is 3121223132.

2313221213 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2277484729 + 35736484 = 47723^2 + 5978^2 .

It is a cyclic number.

It is not a de Polignac number, because 2313221213 - 2⁶ = 2313221149 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2313221243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1156610606 + 1156610607.

It is an arithmetic number, because the mean of its divisors is an integer number (1156610607).

Almost surely, 2^2313221213 is an apocalyptic number.

It is an amenable number.

2313221213 is a deficient number, since it is larger than the sum of its proper divisors (1).

2313221213 is an equidigital number, since it uses as much as digits as its factorization.

2313221213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 432, while the sum is 20.

The square root of 2313221213 is about 48095.9583852947. The cubic root of 2313221213 is about 1322.5305780621.

Adding to 2313221213 its reverse (3121223132), we get a palindrome (5434444345).

The spelling of 2313221213 in words is "two billion, three hundred thirteen million, two hundred twenty-one thousand, two hundred thirteen".