312112301213 has 2 divisors, whose sum is σ = 312112301214. Its totient is φ = 312112301212.

The previous prime is 312112301203. The next prime is 312112301231. The reversal of 312112301213 is 312103211213.

It is a happy number.

Together with next prime (312112301231) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 219381697924 + 92730603289 = 468382^2 + 304517^2 .

It is a cyclic number.

It is not a de Polignac number, because 312112301213 - 2¹⁰ = 312112300189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (312112301203) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 156056150606 + 156056150607.

It is an arithmetic number, because the mean of its divisors is an integer number (156056150607).

Almost surely, 2^312112301213 is an apocalyptic number.

It is an amenable number.

312112301213 is a deficient number, since it is larger than the sum of its proper divisors (1).

312112301213 is an equidigital number, since it uses as much as digits as its factorization.

312112301213 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 312112301213 its reverse (312103211213), we get a palindrome (624215512426).

The spelling of 312112301213 in words is "three hundred twelve billion, one hundred twelve million, three hundred one thousand, two hundred thirteen".