315052321 has 8 divisors (see below), whose sum is σ = 329943744. Its totient is φ = 300260400.

The previous prime is 315052261. The next prime is 315052333. The reversal of 315052321 is 123250513.

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

It is not a de Polignac number, because 315052321 - 2²¹ = 312955169 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 315052292 and 315052301.

It is not an unprimeable number, because it can be changed into a prime (315052391) 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, 18355 + ... + 31096.

It is an arithmetic number, because the mean of its divisors is an integer number (41242968).

Almost surely, 2^315052321 is an apocalyptic number.

It is an amenable number.

315052321 is a deficient number, since it is larger than the sum of its proper divisors (14891423).

315052321 is a wasteful number, since it uses less digits than its factorization.

315052321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49751.

The product of its (nonzero) digits is 900, while the sum is 22.

The square root of 315052321 is about 17749.7132652897. The cubic root of 315052321 is about 680.4468811398.

The spelling of 315052321 in words is "three hundred fifteen million, fifty-two thousand, three hundred twenty-one".