313646 has 4 divisors (see below), whose sum is σ = 470472. Its totient is φ = 156822.

The previous prime is 313639. The next prime is 313661. The reversal of 313646 is 646313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 646313 = 71 ⋅9103.

It is a Curzon number.

It is a plaindrome in base 8.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 313646.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78410 + ... + 78413.

It is an arithmetic number, because the mean of its divisors is an integer number (117618).

2³¹³⁶⁴⁶ is an apocalyptic number.

313646 is a deficient number, since it is larger than the sum of its proper divisors (156826).

313646 is a wasteful number, since it uses less digits than its factorization.

313646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156825.

The product of its digits is 1296, while the sum is 23.

The square root of 313646 is about 560.0410699226. The cubic root of 313646 is about 67.9432918221.

Adding to 313646 its reverse (646313), we get a palindrome (959959).

It can be divided in two parts, 313 and 646, that added together give a palindrome (959).

The spelling of 313646 in words is "three hundred thirteen thousand, six hundred forty-six".