30315149 has 4 divisors (see below), whose sum is σ = 30441180. Its totient is φ = 30189120.

The previous prime is 30315137. The next prime is 30315151. The reversal of 30315149 is 94151303.

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

It can be written as a sum of positive squares in 2 ways, for example, as 18550249 + 11764900 = 4307^2 + 3430^2 .

It is a cyclic number.

It is not a de Polignac number, because 30315149 - 2¹² = 30311053 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30315349) 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 3 ways as a sum of consecutive naturals, for example, 62654 + ... + 63135.

It is an arithmetic number, because the mean of its divisors is an integer number (7610295).

Almost surely, 2^30315149 is an apocalyptic number.

It is an amenable number.

30315149 is a deficient number, since it is larger than the sum of its proper divisors (126031).

30315149 is a wasteful number, since it uses less digits than its factorization.

30315149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126030.

The product of its (nonzero) digits is 1620, while the sum is 26.

The square root of 30315149 is about 5505.9194509183. The cubic root of 30315149 is about 311.8075085112.

The spelling of 30315149 in words is "thirty million, three hundred fifteen thousand, one hundred forty-nine".