312223232302213 has 2 divisors, whose sum is σ = 312223232302214. Its totient is φ = 312223232302212.

The previous prime is 312223232302193. The next prime is 312223232302231. The reversal of 312223232302213 is 312203232322213.

Together with next prime (312223232302231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 310585566939844 + 1637665362369 = 17623438^2 + 1279713^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-312223232302213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312223232302243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156111616151106 + 156111616151107.

It is an arithmetic number, because the mean of its divisors is an integer number (156111616151107).

Almost surely, 2^{312223232302213} is an apocalyptic number.

It is an amenable number.

312223232302213 is a deficient number, since it is larger than the sum of its proper divisors (1).

312223232302213 is an equidigital number, since it uses as much as digits as its factorization.

312223232302213 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 31104, while the sum is 31.

Adding to 312223232302213 its reverse (312203232322213), we get a palindrome (624426464624426).

The spelling of 312223232302213 in words is "three hundred twelve trillion, two hundred twenty-three billion, two hundred thirty-two million, three hundred two thousand, two hundred thirteen".