30215 has 4 divisors (see below), whose sum is σ = 36264. Its totient is φ = 24168.

The previous prime is 30211. The next prime is 30223. The reversal of 30215 is 51203.

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

It is a cyclic number.

It is not a de Polignac number, because 30215 - 2² = 30211 is a prime.

It is a Duffinian number.

It is a plaindrome in base 12.

It is a junction number, because it is equal to n+sod(n) for n = 30196 and 30205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30211) 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, 3017 + ... + 3026.

It is an arithmetic number, because the mean of its divisors is an integer number (9066).

2³⁰²¹⁵ is an apocalyptic number.

30215 is a deficient number, since it is larger than the sum of its proper divisors (6049).

30215 is an equidigital number, since it uses as much as digits as its factorization.

30215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6048.

The product of its (nonzero) digits is 30, while the sum is 11.

The square root of 30215 is about 173.8246242625. The cubic root of 30215 is about 31.1463767710.

Adding to 30215 its reverse (51203), we get a palindrome (81418).

The spelling of 30215 in words is "thirty thousand, two hundred fifteen".