30803381 has 4 divisors (see below), whose sum is σ = 35203872. Its totient is φ = 26402892.

The previous prime is 30803363. The next prime is 30803387. The reversal of 30803381 is 18330803.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30803381 - 2¹⁸ = 30541237 is a prime.

It is a super-2 number, since 2×30803381² = 1897696562062322, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 30803381.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30803387) 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, 2200235 + ... + 2200248.

It is an arithmetic number, because the mean of its divisors is an integer number (8800968).

Almost surely, 2^30803381 is an apocalyptic number.

It is an amenable number.

30803381 is a deficient number, since it is larger than the sum of its proper divisors (4400491).

30803381 is an equidigital number, since it uses as much as digits as its factorization.

30803381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4400490.

The product of its (nonzero) digits is 1728, while the sum is 26.

The square root of 30803381 is about 5550.0793688019. The cubic root of 30803381 is about 313.4725108529.

The spelling of 30803381 in words is "thirty million, eight hundred three thousand, three hundred eighty-one".