311222296213 has 2 divisors, whose sum is σ = 311222296214. Its totient is φ = 311222296212.

The previous prime is 311222296211. The next prime is 311222296267. The reversal of 311222296213 is 312692222113.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155987872209 + 155234424004 = 394953^2 + 393998^2 .

It is a cyclic number.

It is not a de Polignac number, because 311222296213 - 2¹ = 311222296211 is a prime.

Together with 311222296211, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311222296211) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155611148106 + 155611148107.

It is an arithmetic number, because the mean of its divisors is an integer number (155611148107).

Almost surely, 2^311222296213 is an apocalyptic number.

It is an amenable number.

311222296213 is a deficient number, since it is larger than the sum of its proper divisors (1).

311222296213 is an equidigital number, since it uses as much as digits as its factorization.

311222296213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 34.

The spelling of 311222296213 in words is "three hundred eleven billion, two hundred twenty-two million, two hundred ninety-six thousand, two hundred thirteen".