30315 has 16 divisors (see below), whose sum is σ = 50688. Its totient is φ = 15456.

The previous prime is 30313. The next prime is 30319. The reversal of 30315 is 51303.

It is a happy number.

It is not a de Polignac number, because 30315 - 2¹ = 30313 is a prime.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 30315.

It is not an unprimeable number, because it can be changed into a prime (30313) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 622 + ... + 668.

It is an arithmetic number, because the mean of its divisors is an integer number (3168).

2³⁰³¹⁵ is an apocalyptic number.

30315 is a deficient number, since it is larger than the sum of its proper divisors (20373).

30315 is a wasteful number, since it uses less digits than its factorization.

30315 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98.

The product of its (nonzero) digits is 45, while the sum is 12.

The square root of 30315 is about 174.1120328984. The cubic root of 30315 is about 31.1806997662.

Subtracting from 30315 its sum of digits (12), we obtain a palindrome (30303).

Adding to 30315 its reverse (51303), we get a palindrome (81618).

The spelling of 30315 in words is "thirty thousand, three hundred fifteen".