30361 has 4 divisors (see below), whose sum is σ = 30772. Its totient is φ = 29952.

The previous prime is 30347. The next prime is 30367. The reversal of 30361 is 16303.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4761 + 25600 = 69^2 + 160^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30361 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30367) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 60 + ... + 253.

It is an arithmetic number, because the mean of its divisors is an integer number (7693).

2³⁰³⁶¹ is an apocalyptic number.

It is an amenable number.

30361 is a deficient number, since it is larger than the sum of its proper divisors (411).

30361 is an equidigital number, since it uses as much as digits as its factorization.

30361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 410.

The product of its (nonzero) digits is 54, while the sum is 13.

The square root of 30361 is about 174.2440816785. The cubic root of 30361 is about 31.1964630003.

Adding to 30361 its reverse (16303), we get a palindrome (46664).

The spelling of 30361 in words is "thirty thousand, three hundred sixty-one".