313868281 has 4 divisors (see below), whose sum is σ = 327514752. Its totient is φ = 300221812.

The previous prime is 313868249. The next prime is 313868287. The reversal of 313868281 is 182868313.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 182868313 = 691 ⋅264643.

It is a cyclic number.

It is not a de Polignac number, because 313868281 - 2⁵ = 313868249 is a prime.

It is a super-2 number, since 2×313868281² = 197026595635789922, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313868287) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6823201 + ... + 6823246.

It is an arithmetic number, because the mean of its divisors is an integer number (81878688).

Almost surely, 2^313868281 is an apocalyptic number.

It is an amenable number.

313868281 is a deficient number, since it is larger than the sum of its proper divisors (13646471).

313868281 is a wasteful number, since it uses less digits than its factorization.

313868281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13646470.

The product of its digits is 55296, while the sum is 40.

The square root of 313868281 is about 17716.3280902110. The cubic root of 313868281 is about 679.5933850796.

The spelling of 313868281 in words is "three hundred thirteen million, eight hundred sixty-eight thousand, two hundred eighty-one".