318545 has 4 divisors (see below), whose sum is σ = 382260. Its totient is φ = 254832.

The previous prime is 318523. The next prime is 318557. The reversal of 318545 is 545813.

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

It can be written as a sum of positive squares in 2 ways, for example, as 65536 + 253009 = 256^2 + 503^2 .

It is a cyclic number.

It is not a de Polignac number, because 318545 - 2⁸ = 318289 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31850 + ... + 31859.

It is an arithmetic number, because the mean of its divisors is an integer number (95565).

2³¹⁸⁵⁴⁵ is an apocalyptic number.

It is an amenable number.

318545 is a deficient number, since it is larger than the sum of its proper divisors (63715).

318545 is an equidigital number, since it uses as much as digits as its factorization.

318545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63714.

The product of its digits is 2400, while the sum is 26.

The square root of 318545 is about 564.3979092803. The cubic root of 318545 is about 68.2952130565.

The spelling of 318545 in words is "three hundred eighteen thousand, five hundred forty-five".