30109 has 2 divisors, whose sum is σ = 30110. Its totient is φ = 30108.

The previous prime is 30103. The next prime is 30113. The reversal of 30109 is 90103.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 24025 + 6084 = 155^2 + 78^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30109 is a prime.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30103) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15054 + 15055.

It is an arithmetic number, because the mean of its divisors is an integer number (15055).

2³⁰¹⁰⁹ is an apocalyptic number.

It is an amenable number.

30109 is a deficient number, since it is larger than the sum of its proper divisors (1).

30109 is an equidigital number, since it uses as much as digits as its factorization.

30109 is an evil number, because the sum of its binary digits is even.

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

The square root of 30109 is about 173.5194513592. The cubic root of 30109 is about 31.1099116129.

The spelling of 30109 in words is "thirty thousand, one hundred nine".