313020314521 has 4 divisors (see below), whose sum is σ = 323814118500. Its totient is φ = 302226510544.

The previous prime is 313020314507. The next prime is 313020314549. The reversal of 313020314521 is 125413020313.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 222576368400 + 90443946121 = 471780^2 + 300739^2 .

It is a cyclic number.

It is not a de Polignac number, because 313020314521 - 2¹⁷ = 313020183449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (313020314591) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5396901946 + ... + 5396902003.

It is an arithmetic number, because the mean of its divisors is an integer number (80953529625).

Almost surely, 2^313020314521 is an apocalyptic number.

It is an amenable number.

313020314521 is a deficient number, since it is larger than the sum of its proper divisors (10793803979).

313020314521 is a wasteful number, since it uses less digits than its factorization.

313020314521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10793803978.

The product of its (nonzero) digits is 2160, while the sum is 25.

Adding to 313020314521 its reverse (125413020313), we get a palindrome (438433334834).

The spelling of 313020314521 in words is "three hundred thirteen billion, twenty million, three hundred fourteen thousand, five hundred twenty-one".