313540 has 24 divisors (see below), whose sum is σ = 671832. Its totient is φ = 122880.

The previous prime is 313517. The next prime is 313543. The reversal of 313540 is 45313.

313540 is nontrivially palindromic in base 16.

It can be written as a sum of positive squares in 4 ways, for example, as 36864 + 276676 = 192^2 + 526^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1092 + ... + 1348.

It is an arithmetic number, because the mean of its divisors is an integer number (27993).

2³¹³⁵⁴⁰ is an apocalyptic number.

It is an amenable number.

313540 is an abundant number, since it is smaller than the sum of its proper divisors (358292).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

313540 is a wasteful number, since it uses less digits than its factorization.

313540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327 (or 325 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 16.

The square root of 313540 is about 559.9464260088. The cubic root of 313540 is about 67.9356369071.

Adding to 313540 its reverse (45313), we get a palindrome (358853).

The spelling of 313540 in words is "three hundred thirteen thousand, five hundred forty".