30116215 has 4 divisors (see below), whose sum is σ = 36139464. Its totient is φ = 24092968.

The previous prime is 30116209. The next prime is 30116291. The reversal of 30116215 is 51261103.

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 30116215 - 2⁵ = 30116183 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30116192 and 30116201.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3011617 + ... + 3011626.

It is an arithmetic number, because the mean of its divisors is an integer number (9034866).

Almost surely, 2^30116215 is an apocalyptic number.

30116215 is a deficient number, since it is larger than the sum of its proper divisors (6023249).

30116215 is an equidigital number, since it uses as much as digits as its factorization.

30116215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6023248.

The product of its (nonzero) digits is 180, while the sum is 19.

The square root of 30116215 is about 5487.8242501013. The cubic root of 30116215 is about 311.1239636366.

Adding to 30116215 its reverse (51261103), we get a palindrome (81377318).

The spelling of 30116215 in words is "thirty million, one hundred sixteen thousand, two hundred fifteen".