313865868439 has 4 divisors (see below), whose sum is σ = 315492116656. Its totient is φ = 312239620224.

The previous prime is 313865868373. The next prime is 313865868487. The reversal of 313865868439 is 934868568313.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 934868568313 = 89 ⋅10504141217.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-313865868439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (313865868539) 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, 813123819 + ... + 813124204.

It is an arithmetic number, because the mean of its divisors is an integer number (78873029164).

Almost surely, 2^313865868439 is an apocalyptic number.

313865868439 is a deficient number, since it is larger than the sum of its proper divisors (1626248217).

313865868439 is a wasteful number, since it uses less digits than its factorization.

313865868439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1626248216.

The product of its digits is 89579520, while the sum is 64.

The spelling of 313865868439 in words is "three hundred thirteen billion, eight hundred sixty-five million, eight hundred sixty-eight thousand, four hundred thirty-nine".