318284089 has 2 divisors, whose sum is σ = 318284090. Its totient is φ = 318284088.

The previous prime is 318284023. The next prime is 318284137. The reversal of 318284089 is 980482813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166797225 + 151486864 = 12915^2 + 12308^2 .

It is a cyclic number.

It is not a de Polignac number, because 318284089 - 2¹⁵ = 318251321 is a prime.

It is a super-2 number, since 2×318284089² = 202609522621119842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (318284689) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159142044 + 159142045.

It is an arithmetic number, because the mean of its divisors is an integer number (159142045).

Almost surely, 2^318284089 is an apocalyptic number.

It is an amenable number.

318284089 is a deficient number, since it is larger than the sum of its proper divisors (1).

318284089 is an equidigital number, since it uses as much as digits as its factorization.

318284089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 110592, while the sum is 43.

The square root of 318284089 is about 17840.5181819363. The cubic root of 318284089 is about 682.7656175178.

The spelling of 318284089 in words is "three hundred eighteen million, two hundred eighty-four thousand, eighty-nine".