30315205 has 16 divisors (see below), whose sum is σ = 37376640. Its totient is φ = 23594688.

The previous prime is 30315191. The next prime is 30315209. The reversal of 30315205 is 50251303.

It is a cyclic number.

It is not a de Polignac number, because 30315205 - 2⁹ = 30314693 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30315209) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36424 + ... + 37246.

It is an arithmetic number, because the mean of its divisors is an integer number (2336040).

Almost surely, 2^30315205 is an apocalyptic number.

It is an amenable number.

30315205 is a deficient number, since it is larger than the sum of its proper divisors (7061435).

30315205 is a wasteful number, since it uses less digits than its factorization.

30315205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020.

The product of its (nonzero) digits is 450, while the sum is 19.

The square root of 30315205 is about 5505.9245363517. The cubic root of 30315205 is about 311.8077005077.

Adding to 30315205 its reverse (50251303), we get a palindrome (80566508).

It can be divided in two parts, 30315 and 205, that multiplied together give a triangular number (6214575 = T₃₅₂₅).

The spelling of 30315205 in words is "thirty million, three hundred fifteen thousand, two hundred five".