318413 has 4 divisors (see below), whose sum is σ = 320700. Its totient is φ = 316128.

The previous prime is 318407. The next prime is 318419. The reversal of 318413 is 314813.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (318407) and next prime (318419).

It can be written as a sum of positive squares in 2 ways, for example, as 24649 + 293764 = 157^2 + 542^2 .

It is a cyclic number.

It is not a de Polignac number, because 318413 - 2⁶ = 318349 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 (318419) 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, 920 + ... + 1217.

It is an arithmetic number, because the mean of its divisors is an integer number (80175).

2³¹⁸⁴¹³ is an apocalyptic number.

It is an amenable number.

318413 is a deficient number, since it is larger than the sum of its proper divisors (2287).

318413 is a wasteful number, since it uses less digits than its factorization.

318413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2286.

The product of its digits is 288, while the sum is 20.

The square root of 318413 is about 564.2809583886. The cubic root of 318413 is about 68.2857782685.

Subtracting from 318413 its reverse (314813), we obtain a square (3600 = 60²).

The spelling of 318413 in words is "three hundred eighteen thousand, four hundred thirteen".