30505050503 has 4 divisors (see below), whose sum is σ = 30807080808. Its totient is φ = 30203020200.

The previous prime is 30505050473. The next prime is 30505050539.

30505050503 is nontrivially palindromic in base 10.

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 30505050503 - 2¹⁶ = 30504984967 is a prime.

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

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30505050703) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 151015001 + ... + 151015202.

It is an arithmetic number, because the mean of its divisors is an integer number (7701770202).

Almost surely, 2^30505050503 is an apocalyptic number.

30505050503 is a deficient number, since it is larger than the sum of its proper divisors (302030305).

30505050503 is a wasteful number, since it uses less digits than its factorization.

30505050503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302030304.

The product of its (nonzero) digits is 5625, while the sum is 26.

It can be divided in two parts, 305050 and 50503, that added together give a palindrome (355553).

The spelling of 30505050503 in words is "thirty billion, five hundred five million, fifty thousand, five hundred three".