311404230222257 has 2 divisors, whose sum is σ = 311404230222258. Its totient is φ = 311404230222256.

The previous prime is 311404230222167. The next prime is 311404230222271. The reversal of 311404230222257 is 752222032404113.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 174246309657121 + 137157920565136 = 13200239^2 + 11711444^2 .

It is a cyclic number.

It is not a de Polignac number, because 311404230222257 - 2¹⁰ = 311404230221233 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 311404230222257.

It is not a weakly prime, because it can be changed into another prime (311404238222257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 155702115111128 + 155702115111129.

It is an arithmetic number, because the mean of its divisors is an integer number (155702115111129).

Almost surely, 2^{311404230222257} is an apocalyptic number.

It is an amenable number.

311404230222257 is a deficient number, since it is larger than the sum of its proper divisors (1).

311404230222257 is an equidigital number, since it uses as much as digits as its factorization.

311404230222257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 161280, while the sum is 38.

The spelling of 311404230222257 in words is "three hundred eleven trillion, four hundred four billion, two hundred thirty million, two hundred twenty-two thousand, two hundred fifty-seven".