318291101 has 2 divisors, whose sum is σ = 318291102. Its totient is φ = 318291100.

The previous prime is 318291091. The next prime is 318291133. The reversal of 318291101 is 101192813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 312405625 + 5885476 = 17675^2 + 2426^2 .

It is a cyclic number.

It is not a de Polignac number, because 318291101 - 2²⁶ = 251182237 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318291301) 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, 159145550 + 159145551.

It is an arithmetic number, because the mean of its divisors is an integer number (159145551).

Almost surely, 2^318291101 is an apocalyptic number.

It is an amenable number.

318291101 is a deficient number, since it is larger than the sum of its proper divisors (1).

318291101 is an equidigital number, since it uses as much as digits as its factorization.

318291101 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 318291101 is about 17840.7146998095. The cubic root of 318291101 is about 682.7706314006.

The spelling of 318291101 in words is "three hundred eighteen million, two hundred ninety-one thousand, one hundred one".