123313213 has 2 divisors, whose sum is σ = 123313214. Its totient is φ = 123313212.

The previous prime is 123313187. The next prime is 123313219. The reversal of 123313213 is 312313321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 88774084 + 34539129 = 9422^2 + 5877^2 .

It is an emirp because it is prime and its reverse (312313321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123313213 - 2⁵ = 123313181 is a prime.

It is a super-2 number, since 2×123313213² = 30412297000766738, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123313219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61656606 + 61656607.

It is an arithmetic number, because the mean of its divisors is an integer number (61656607).

Almost surely, 2^123313213 is an apocalyptic number.

It is an amenable number.

123313213 is a deficient number, since it is larger than the sum of its proper divisors (1).

123313213 is an equidigital number, since it uses as much as digits as its factorization.

123313213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 324, while the sum is 19.

The square root of 123313213 is about 11104.6482609761. The cubic root of 123313213 is about 497.7407576905.

Adding to 123313213 its reverse (312313321), we get a palindrome (435626534).

The spelling of 123313213 in words is "one hundred twenty-three million, three hundred thirteen thousand, two hundred thirteen".