30191 has 8 divisors (see below), whose sum is σ = 36480. Its totient is φ = 24408.

The previous prime is 30187. The next prime is 30197. The reversal of 30191 is 19103.

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

It is a cyclic number.

It is not a de Polignac number, because 30191 - 2² = 30187 is a prime.

It is a super-2 number, since 2×30191² = 1822992962, which contains 22 as substring.

It is a plaindrome in base 12.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30197) 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, 20 + ... + 246.

It is an arithmetic number, because the mean of its divisors is an integer number (4560).

2³⁰¹⁹¹ is an apocalyptic number.

30191 is a deficient number, since it is larger than the sum of its proper divisors (6289).

30191 is a wasteful number, since it uses less digits than its factorization.

30191 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 253.

The product of its (nonzero) digits is 27, while the sum is 14.

The square root of 30191 is about 173.7555754501. The cubic root of 30191 is about 31.1381279868.

Adding to 30191 its reverse (19103), we get a palindrome (49294).

The spelling of 30191 in words is "thirty thousand, one hundred ninety-one".