318481 has 8 divisors (see below), whose sum is σ = 339264. Its totient is φ = 298320.

The previous prime is 318473. The next prime is 318503. The reversal of 318481 is 184813.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 318481 - 2³ = 318473 is a prime.

It is a super-2 number, since 2×318481² = 202860294722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (318431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1290 + ... + 1516.

It is an arithmetic number, because the mean of its divisors is an integer number (42408).

2³¹⁸⁴⁸¹ is an apocalyptic number.

It is an amenable number.

318481 is a deficient number, since it is larger than the sum of its proper divisors (20783).

318481 is a wasteful number, since it uses less digits than its factorization.

318481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 311.

The product of its digits is 768, while the sum is 25.

The square root of 318481 is about 564.3412088444. The cubic root of 318481 is about 68.2906389394.

Subtracting from 318481 its product of digits (768), we obtain a palindrome (317713).

The spelling of 318481 in words is "three hundred eighteen thousand, four hundred eighty-one".