313030321 has 8 divisors (see below), whose sum is σ = 325175400. Its totient is φ = 300975360.

The previous prime is 313030309. The next prime is 313030331. The reversal of 313030321 is 123030313.

It can be written as a sum of positive squares in 4 ways, for example, as 21986721 + 291043600 = 4689^2 + 17060^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 313030321 - 2¹¹ = 313028273 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 313030295 and 313030304.

It is not an unprimeable number, because it can be changed into a prime (313030331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15406 + ... + 29383.

It is an arithmetic number, because the mean of its divisors is an integer number (40646925).

Almost surely, 2^313030321 is an apocalyptic number.

It is an amenable number.

313030321 is a deficient number, since it is larger than the sum of its proper divisors (12145079).

313030321 is a wasteful number, since it uses less digits than its factorization.

313030321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45059.

The product of its (nonzero) digits is 162, while the sum is 16.

The square root of 313030321 is about 17692.6629143269. The cubic root of 313030321 is about 678.9880572512.

Adding to 313030321 its reverse (123030313), we get a palindrome (436060634).

The spelling of 313030321 in words is "three hundred thirteen million, thirty thousand, three hundred twenty-one".