318822137243 has 2 divisors, whose sum is σ = 318822137244. Its totient is φ = 318822137242.

The previous prime is 318822137237. The next prime is 318822137261. The reversal of 318822137243 is 342731228813.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-318822137243 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 318822137194 and 318822137203.

It is not a weakly prime, because it can be changed into another prime (318822137143) 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, 159411068621 + 159411068622.

It is an arithmetic number, because the mean of its divisors is an integer number (159411068622).

Almost surely, 2^318822137243 is an apocalyptic number.

318822137243 is a deficient number, since it is larger than the sum of its proper divisors (1).

318822137243 is an equidigital number, since it uses as much as digits as its factorization.

318822137243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 44.

The spelling of 318822137243 in words is "three hundred eighteen billion, eight hundred twenty-two million, one hundred thirty-seven thousand, two hundred forty-three".