2321213 has 2 divisors, whose sum is σ = 2321214. Its totient is φ = 2321212.

The previous prime is 2321171. The next prime is 2321219. The reversal of 2321213 is 3121232.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1295044 + 1026169 = 1138^2 + 1013^2 .

It is a cyclic number.

It is not a de Polignac number, because 2321213 - 2⁶ = 2321149 is a prime.

It is a plaindrome in base 14.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2321219) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1160606 + 1160607.

It is an arithmetic number, because the mean of its divisors is an integer number (1160607).

2^2321213 is an apocalyptic number.

It is an amenable number.

2321213 is a deficient number, since it is larger than the sum of its proper divisors (1).

2321213 is an equidigital number, since it uses as much as digits as its factorization.

2321213 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 72, while the sum is 14.

The square root of 2321213 is about 1523.5527558966. The cubic root of 2321213 is about 132.4051867094.

Adding to 2321213 its reverse (3121232), we get a palindrome (5442445).

The spelling of 2321213 in words is "two million, three hundred twenty-one thousand, two hundred thirteen".