318137 has 2 divisors, whose sum is σ = 318138. Its totient is φ = 318136.

The previous prime is 318127. The next prime is 318161. The reversal of 318137 is 731813.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 295936 + 22201 = 544^2 + 149^2 .

It is a cyclic number.

It is not a de Polignac number, because 318137 - 2¹⁴ = 301753 is a prime.

It is a super-2 number, since 2×318137² = 202422301538, which contains 22 as substring.

It is a Chen prime.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 318137.

It is not a weakly prime, because it can be changed into another prime (318107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159068 + 159069.

It is an arithmetic number, because the mean of its divisors is an integer number (159069).

2³¹⁸¹³⁷ is an apocalyptic number.

It is an amenable number.

318137 is a deficient number, since it is larger than the sum of its proper divisors (1).

318137 is an equidigital number, since it uses as much as digits as its factorization.

318137 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 504, while the sum is 23.

The square root of 318137 is about 564.0363463466. The cubic root of 318137 is about 68.2660425553.

The spelling of 318137 in words is "three hundred eighteen thousand, one hundred thirty-seven".