30503153 has 4 divisors (see below), whose sum is σ = 30588480. Its totient is φ = 30417828.

The previous prime is 30503149. The next prime is 30503159. The reversal of 30503153 is 35130503.

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 30503153 - 2² = 30503149 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30503159) 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, 42125 + ... + 42842.

It is an arithmetic number, because the mean of its divisors is an integer number (7647120).

Almost surely, 2^30503153 is an apocalyptic number.

It is an amenable number.

30503153 is a deficient number, since it is larger than the sum of its proper divisors (85327).

30503153 is an equidigital number, since it uses as much as digits as its factorization.

30503153 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 85326.

The product of its (nonzero) digits is 675, while the sum is 20.

The square root of 30503153 is about 5522.9659604238. The cubic root of 30503153 is about 312.4507544800.

Adding to 30503153 its reverse (35130503), we get a palindrome (65633656).

The spelling of 30503153 in words is "thirty million, five hundred three thousand, one hundred fifty-three".