311223002317 has 2 divisors, whose sum is σ = 311223002318. Its totient is φ = 311223002316.

The previous prime is 311223002287. The next prime is 311223002333. The reversal of 311223002317 is 713200322113.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 261503367876 + 49719634441 = 511374^2 + 222979^2 .

It is a cyclic number.

It is not a de Polignac number, because 311223002317 - 2³¹ = 309075518669 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 311223002291 and 311223002300.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (311223002117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155611501158 + 155611501159.

It is an arithmetic number, because the mean of its divisors is an integer number (155611501159).

Almost surely, 2^311223002317 is an apocalyptic number.

It is an amenable number.

311223002317 is a deficient number, since it is larger than the sum of its proper divisors (1).

311223002317 is an equidigital number, since it uses as much as digits as its factorization.

311223002317 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 25.

The spelling of 311223002317 in words is "three hundred eleven billion, two hundred twenty-three million, two thousand, three hundred seventeen".