313243140321 has 6 divisors (see below), whose sum is σ = 452462313810. Its totient is φ = 208828760208.

The previous prime is 313243140293. The next prime is 313243140323. The reversal of 313243140321 is 123041342313.

It is a happy number.

313243140321 is a `hidden beast` number, since 3 + 1 + 3 + 24 + 314 + 0 + 321 = 666.

It can be written as a sum of positive squares in only one way, i.e., 290994434721 + 22248705600 = 539439^2 + 149160^2 .

It is not a de Polignac number, because 313243140321 - 2⁵ = 313243140289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (313243140323) 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 5 ways as a sum of consecutive naturals, for example, 17402396676 + ... + 17402396693.

It is an arithmetic number, because the mean of its divisors is an integer number (75410385635).

Almost surely, 2^313243140321 is an apocalyptic number.

It is an amenable number.

313243140321 is a deficient number, since it is larger than the sum of its proper divisors (139219173489).

313243140321 is a wasteful number, since it uses less digits than its factorization.

313243140321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34804793375 (or 34804793372 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

Adding to 313243140321 its reverse (123041342313), we get a palindrome (436284482634).

The spelling of 313243140321 in words is "three hundred thirteen billion, two hundred forty-three million, one hundred forty thousand, three hundred twenty-one".