30713147 has 4 divisors (see below), whose sum is σ = 30744480. Its totient is φ = 30681816.

The previous prime is 30713143. The next prime is 30713149. The reversal of 30713147 is 74131703.

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 30713147 - 2² = 30713143 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30713143) 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, 14147 + ... + 16172.

It is an arithmetic number, because the mean of its divisors is an integer number (7686120).

Almost surely, 2^30713147 is an apocalyptic number.

30713147 is a deficient number, since it is larger than the sum of its proper divisors (31333).

30713147 is a wasteful number, since it uses less digits than its factorization.

30713147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31332.

The product of its (nonzero) digits is 1764, while the sum is 26.

The square root of 30713147 is about 5541.9443338958. The cubic root of 30713147 is about 313.1661208567.

The spelling of 30713147 in words is "thirty million, seven hundred thirteen thousand, one hundred forty-seven".