318497 has 4 divisors (see below), whose sum is σ = 335280. Its totient is φ = 301716.

The previous prime is 318473. The next prime is 318503. The reversal of 318497 is 794813.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 794813 = 673 ⋅1181.

It is a cyclic number.

It is not a de Polignac number, because 318497 - 2¹² = 314401 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (318407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8363 + ... + 8400.

It is an arithmetic number, because the mean of its divisors is an integer number (83820).

2³¹⁸⁴⁹⁷ is an apocalyptic number.

It is an amenable number.

318497 is a deficient number, since it is larger than the sum of its proper divisors (16783).

318497 is a wasteful number, since it uses less digits than its factorization.

318497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16782.

The product of its digits is 6048, while the sum is 32.

The square root of 318497 is about 564.3553844875. The cubic root of 318497 is about 68.2917825261.

The spelling of 318497 in words is "three hundred eighteen thousand, four hundred ninety-seven".