318146131 has 2 divisors, whose sum is σ = 318146132. Its totient is φ = 318146130.

The previous prime is 318146123. The next prime is 318146161. The reversal of 318146131 is 131641813.

It is a weak prime.

It is an emirp because it is prime and its reverse (131641813) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 318146131 - 2³ = 318146123 is a prime.

It is a super-2 number, since 2×318146131² = 202433921340538322, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 318146131.

It is not a weakly prime, because it can be changed into another prime (318146161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159073065 + 159073066.

It is an arithmetic number, because the mean of its divisors is an integer number (159073066).

Almost surely, 2^318146131 is an apocalyptic number.

318146131 is a deficient number, since it is larger than the sum of its proper divisors (1).

318146131 is an equidigital number, since it uses as much as digits as its factorization.

318146131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1728, while the sum is 28.

The square root of 318146131 is about 17836.6513393069. The cubic root of 318146131 is about 682.6669566100. Note that the first 3 decimals are identical.

Adding to 318146131 its reverse (131641813), we get a palindrome (449787944).

The spelling of 318146131 in words is "three hundred eighteen million, one hundred forty-six thousand, one hundred thirty-one".