318061369 has 2 divisors, whose sum is σ = 318061370. Its totient is φ = 318061368.

The previous prime is 318061363. The next prime is 318061379. The reversal of 318061369 is 963160813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 270174969 + 47886400 = 16437^2 + 6920^2 .

It is a cyclic number.

It is not a de Polignac number, because 318061369 - 2⁹ = 318060857 is a prime.

It is a super-2 number, since 2×318061369² = 202326068900308322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (318061363) 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, 159030684 + 159030685.

It is an arithmetic number, because the mean of its divisors is an integer number (159030685).

Almost surely, 2^318061369 is an apocalyptic number.

It is an amenable number.

318061369 is a deficient number, since it is larger than the sum of its proper divisors (1).

318061369 is an equidigital number, since it uses as much as digits as its factorization.

318061369 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 318061369 is about 17834.2751184342. The cubic root of 318061369 is about 682.6063247698.

The spelling of 318061369 in words is "three hundred eighteen million, sixty-one thousand, three hundred sixty-nine".