30804623 has 4 divisors (see below), whose sum is σ = 30840240. Its totient is φ = 30769008.

The previous prime is 30804619. The next prime is 30804637. The reversal of 30804623 is 32640803.

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

It is a cyclic number.

It is not a de Polignac number, because 30804623 - 2² = 30804619 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 30804592 and 30804601.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30806623) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16478 + ... + 18251.

It is an arithmetic number, because the mean of its divisors is an integer number (7710060).

Almost surely, 2^30804623 is an apocalyptic number.

30804623 is a deficient number, since it is larger than the sum of its proper divisors (35617).

30804623 is an equidigital number, since it uses as much as digits as its factorization.

30804623 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35616.

The product of its (nonzero) digits is 3456, while the sum is 26.

The square root of 30804623 is about 5550.1912579658. The cubic root of 30804623 is about 313.4767238929.

The spelling of 30804623 in words is "thirty million, eight hundred four thousand, six hundred twenty-three".