30317939 has 8 divisors (see below), whose sum is σ = 32274000. Its totient is φ = 28397952.

The previous prime is 30317929. The next prime is 30317941. The reversal of 30317939 is 93971303.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30317939 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30317899 and 30317908.

It is not an unprimeable number, because it can be changed into a prime (30317929) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7274 + ... + 10655.

It is an arithmetic number, because the mean of its divisors is an integer number (4034250).

Almost surely, 2^30317939 is an apocalyptic number.

30317939 is a deficient number, since it is larger than the sum of its proper divisors (1956061).

30317939 is a wasteful number, since it uses less digits than its factorization.

30317939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18037.

The product of its (nonzero) digits is 15309, while the sum is 35.

The square root of 30317939 is about 5506.1728087665. The cubic root of 30317939 is about 311.8170737648.

The spelling of 30317939 in words is "thirty million, three hundred seventeen thousand, nine hundred thirty-nine".