318641 has 2 divisors, whose sum is σ = 318642. Its totient is φ = 318640.

The previous prime is 318629. The next prime is 318653. The reversal of 318641 is 146813.

It is a balanced prime because it is at equal distance from previous prime (318629) and next prime (318653).

It can be written as a sum of positive squares in only one way, i.e., 313600 + 5041 = 560^2 + 71^2 .

It is a cyclic number.

It is not a de Polignac number, because 318641 - 2¹⁰ = 317617 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (318601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 159320 + 159321.

It is an arithmetic number, because the mean of its divisors is an integer number (159321).

2³¹⁸⁶⁴¹ is an apocalyptic number.

It is an amenable number.

318641 is a deficient number, since it is larger than the sum of its proper divisors (1).

318641 is an equidigital number, since it uses as much as digits as its factorization.

318641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 576, while the sum is 23.

The square root of 318641 is about 564.4829492553. The cubic root of 318641 is about 68.3020730835.

It can be divided in two parts, 318 and 641, that added together give a palindrome (959).

The spelling of 318641 in words is "three hundred eighteen thousand, six hundred forty-one".