318488069 has 2 divisors, whose sum is σ = 318488070. Its totient is φ = 318488068.

The previous prime is 318488029. The next prime is 318488083. The reversal of 318488069 is 960884813.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 291965569 + 26522500 = 17087^2 + 5150^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-318488069 is a prime.

It is a super-2 number, since 2×318488069² = 202869300190697522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318488029) 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, 159244034 + 159244035.

It is an arithmetic number, because the mean of its divisors is an integer number (159244035).

Almost surely, 2^318488069 is an apocalyptic number.

It is an amenable number.

318488069 is a deficient number, since it is larger than the sum of its proper divisors (1).

318488069 is an equidigital number, since it uses as much as digits as its factorization.

318488069 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 331776, while the sum is 47.

The square root of 318488069 is about 17846.2340285002. The cubic root of 318488069 is about 682.9114419499.

The spelling of 318488069 in words is "three hundred eighteen million, four hundred eighty-eight thousand, sixty-nine".