30091 has 2 divisors, whose sum is σ = 30092. Its totient is φ = 30090.

The previous prime is 30089. The next prime is 30097. The reversal of 30091 is 19003.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 30091 - 2¹ = 30089 is a prime.

Together with 30089, it forms a pair of twin primes.

It is equal to p₃₂₅₃ and since 30091 and 3253 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (30097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15045 + 15046.

It is an arithmetic number, because the mean of its divisors is an integer number (15046).

2³⁰⁰⁹¹ is an apocalyptic number.

30091 is a deficient number, since it is larger than the sum of its proper divisors (1).

30091 is an equidigital number, since it uses as much as digits as its factorization.

30091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27, while the sum is 13.

The square root of 30091 is about 173.4675762210. The cubic root of 30091 is about 31.1037109194.

Adding to 30091 its reverse (19003), we get a palindrome (49094).

The spelling of 30091 in words is "thirty thousand, ninety-one".