30713947 has 16 divisors (see below), whose sum is σ = 35463168. Its totient is φ = 26326080.

The previous prime is 30713941. The next prime is 30714001. The reversal of 30713947 is 74931703.

It is not a de Polignac number, because 30713947 - 2¹⁵ = 30681179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30713941) 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, 17638 + ... + 19300.

It is an arithmetic number, because the mean of its divisors is an integer number (2216448).

Almost surely, 2^30713947 is an apocalyptic number.

30713947 is a deficient number, since it is larger than the sum of its proper divisors (4749221).

30713947 is a wasteful number, since it uses less digits than its factorization.

30713947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1770.

The product of its (nonzero) digits is 15876, while the sum is 34.

The square root of 30713947 is about 5542.0165102605. The cubic root of 30713947 is about 313.1688398956.

The spelling of 30713947 in words is "thirty million, seven hundred thirteen thousand, nine hundred forty-seven".