318230009 has 2 divisors, whose sum is σ = 318230010. Its totient is φ = 318230008.

The previous prime is 318229999. The next prime is 318230027. The reversal of 318230009 is 900032813.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 251317609 + 66912400 = 15853^2 + 8180^2 .

It is a cyclic number.

It is not a de Polignac number, because 318230009 - 2¹² = 318225913 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 318230009.

It is not a weakly prime, because it can be changed into another prime (318230509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159115004 + 159115005.

It is an arithmetic number, because the mean of its divisors is an integer number (159115005).

Almost surely, 2^318230009 is an apocalyptic number.

It is an amenable number.

318230009 is a deficient number, since it is larger than the sum of its proper divisors (1).

318230009 is an equidigital number, since it uses as much as digits as its factorization.

318230009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 318230009 is about 17839.0024665058. The cubic root of 318230009 is about 682.7269455082.

The spelling of 318230009 in words is "three hundred eighteen million, two hundred thirty thousand, nine".