315430321 has 8 divisors (see below), whose sum is σ = 316864224. Its totient is φ = 314000640.

The previous prime is 315430319. The next prime is 315430391. The reversal of 315430321 is 123034513.

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 315430321 - 2¹ = 315430319 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 315430292 and 315430301.

It is not an unprimeable number, because it can be changed into a prime (315430391) 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, 324366 + ... + 325336.

It is an arithmetic number, because the mean of its divisors is an integer number (39608028).

Almost surely, 2^315430321 is an apocalyptic number.

It is an amenable number.

315430321 is a deficient number, since it is larger than the sum of its proper divisors (1433903).

315430321 is an equidigital number, since it uses as much as digits as its factorization.

315430321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2111.

The product of its (nonzero) digits is 1080, while the sum is 22.

The square root of 315430321 is about 17760.3581326504. The cubic root of 315430321 is about 680.7189059285.

Adding to 315430321 its reverse (123034513), we get a palindrome (438464834).

The spelling of 315430321 in words is "three hundred fifteen million, four hundred thirty thousand, three hundred twenty-one".