318877348133 has 2 divisors, whose sum is σ = 318877348134. Its totient is φ = 318877348132.

The previous prime is 318877348117. The next prime is 318877348199. The reversal of 318877348133 is 331843778813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 203940753604 + 114936594529 = 451598^2 + 339023^2 .

It is a cyclic number.

It is not a de Polignac number, because 318877348133 - 2⁴ = 318877348117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318877348333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159438674066 + 159438674067.

It is an arithmetic number, because the mean of its divisors is an integer number (159438674067).

Almost surely, 2^318877348133 is an apocalyptic number.

It is an amenable number.

318877348133 is a deficient number, since it is larger than the sum of its proper divisors (1).

318877348133 is an equidigital number, since it uses as much as digits as its factorization.

318877348133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8128512, while the sum is 56.

The spelling of 318877348133 in words is "three hundred eighteen billion, eight hundred seventy-seven million, three hundred forty-eight thousand, one hundred thirty-three".