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30317 = 76171

30317 has 8 divisors (see below), whose sum is σ = 35712. Its totient is φ = 25200.

The previous prime is 30313. The next prime is 30319. The reversal of 30317 is 71303.

It is a happy number.

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

It is not a de Polignac number, because 30317 - 22 = 30313 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 30317.

It is not an unprimeable number, because it can be changed into a prime (30313) 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, 392 + ... + 462.

It is an arithmetic number, because the mean of its divisors is an integer number (4464).

230317 is an apocalyptic number.

It is an amenable number.

30317 is a deficient number, since it is larger than the sum of its proper divisors (5395).

30317 is an equidigital number, since it uses as much as digits as its factorization.

30317 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139.

The product of its (nonzero) digits is 63, while the sum is 14.

The square root of 30317 is about 174.1177762321. The cubic root of 30317 is about 31.1813854557.

Subtracting from 30317 its sum of digits (14), we obtain a palindrome (30303).

It can be divided in two parts, 303 and 17, that multiplied together give a triangular number (5151 = T101).

The spelling of 30317 in words is "thirty thousand, three hundred seventeen".

Divisors: 1 7 61 71 427 497 4331 30317