318880243049 has 2 divisors, whose sum is σ = 318880243050. Its totient is φ = 318880243048.

The previous prime is 318880242983. The next prime is 318880243051. The reversal of 318880243049 is 940342088813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 213414433024 + 105465810025 = 461968^2 + 324755^2 .

It is a cyclic number.

It is not a de Polignac number, because 318880243049 - 2¹² = 318880238953 is a prime.

Together with 318880243051, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 318880242988 and 318880243006.

It is not a weakly prime, because it can be changed into another prime (318880249049) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159440121524 + 159440121525.

It is an arithmetic number, because the mean of its divisors is an integer number (159440121525).

Almost surely, 2^318880243049 is an apocalyptic number.

It is an amenable number.

318880243049 is a deficient number, since it is larger than the sum of its proper divisors (1).

318880243049 is an equidigital number, since it uses as much as digits as its factorization.

318880243049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1327104, while the sum is 50.

The spelling of 318880243049 in words is "three hundred eighteen billion, eight hundred eighty million, two hundred forty-three thousand, forty-nine".