318151 has 4 divisors (see below), whose sum is σ = 322704. Its totient is φ = 313600.

The previous prime is 318137. The next prime is 318161. The reversal of 318151 is 151813.

It is a semiprime because it is the product of two primes.

It is a 8-Lehmer number, since φ(318151) divides (318151-1)⁸.

It is a cyclic number.

It is not a de Polignac number, because 318151 - 2⁷ = 318023 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (318161) 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 in 3 ways as a sum of consecutive naturals, for example, 2170 + ... + 2311.

It is an arithmetic number, because the mean of its divisors is an integer number (80676).

2³¹⁸¹⁵¹ is an apocalyptic number.

318151 is a deficient number, since it is larger than the sum of its proper divisors (4553).

318151 is an equidigital number, since it uses as much as digits as its factorization.

318151 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4552.

The product of its digits is 120, while the sum is 19.

The square root of 318151 is about 564.0487567578. The cubic root of 318151 is about 68.2670439169.

Adding to 318151 its reverse (151813), we get a palindrome (469964).

The spelling of 318151 in words is "three hundred eighteen thousand, one hundred fifty-one".