12320213 has 4 divisors (see below), whose sum is σ = 12620748. Its totient is φ = 12019680.

The previous prime is 12320207. The next prime is 12320219. The reversal of 12320213 is 31202321.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 31202321 = 809 ⋅38569.

It is an interprime number because it is at equal distance from previous prime (12320207) and next prime (12320219).

It can be written as a sum of positive squares in 2 ways, for example, as 223729 + 12096484 = 473^2 + 3478^2 .

It is a cyclic number.

It is not a de Polignac number, because 12320213 - 2⁴ = 12320197 is a prime.

It is a Duffinian number.

It is a plaindrome in base 15.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12320219) 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, 150206 + ... + 150287.

It is an arithmetic number, because the mean of its divisors is an integer number (3155187).

Almost surely, 2^12320213 is an apocalyptic number.

It is an amenable number.

12320213 is a deficient number, since it is larger than the sum of its proper divisors (300535).

12320213 is an equidigital number, since it uses as much as digits as its factorization.

12320213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300534.

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

The square root of 12320213 is about 3510.0160968292. The cubic root of 12320213 is about 230.9614010705.

Adding to 12320213 its reverse (31202321), we get a palindrome (43522534).

The spelling of 12320213 in words is "twelve million, three hundred twenty thousand, two hundred thirteen".