318836721001 has 2 divisors, whose sum is σ = 318836721002. Its totient is φ = 318836721000.

The previous prime is 318836720941. The next prime is 318836721037. The reversal of 318836721001 is 100127638813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 259512811776 + 59323909225 = 509424^2 + 243565^2 .

It is a cyclic number.

It is not a de Polignac number, because 318836721001 - 2¹⁹ = 318836196713 is a prime.

It is not a weakly prime, because it can be changed into another prime (318806721001) 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, 159418360500 + 159418360501.

It is an arithmetic number, because the mean of its divisors is an integer number (159418360501).

Almost surely, 2^318836721001 is an apocalyptic number.

It is an amenable number.

318836721001 is a deficient number, since it is larger than the sum of its proper divisors (1).

318836721001 is an equidigital number, since it uses as much as digits as its factorization.

318836721001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 48384, while the sum is 40.

The spelling of 318836721001 in words is "three hundred eighteen billion, eight hundred thirty-six million, seven hundred twenty-one thousand, one".