318654131 has 2 divisors, whose sum is σ = 318654132. Its totient is φ = 318654130.

The previous prime is 318654113. The next prime is 318654169. The reversal of 318654131 is 131456813.

Together with previous prime (318654113) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 318654131 - 2⁶ = 318654067 is a prime.

It is a super-2 number, since 2×318654131² = 203080910406730322, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (318654331) 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, 159327065 + 159327066.

It is an arithmetic number, because the mean of its divisors is an integer number (159327066).

Almost surely, 2^318654131 is an apocalyptic number.

318654131 is a deficient number, since it is larger than the sum of its proper divisors (1).

318654131 is an equidigital number, since it uses as much as digits as its factorization.

318654131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8640, while the sum is 32.

The square root of 318654131 is about 17850.8860004203. The cubic root of 318654131 is about 683.0301129944.

The spelling of 318654131 in words is "three hundred eighteen million, six hundred fifty-four thousand, one hundred thirty-one".