30505320323403 has 32 divisors (see below), whose sum is σ = 43725275645184. Its totient is φ = 18847941691392.

The previous prime is 30505320323399. The next prime is 30505320323441. The reversal of 30505320323403 is 30432302350503.

It is not a de Polignac number, because 30505320323403 - 2² = 30505320323399 is a prime.

It is a super-2 number, since 2×30505320323403² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (30505320323453) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7600851 + ... + 10898787.

It is an arithmetic number, because the mean of its divisors is an integer number (1366414863912).

Almost surely, 2^{30505320323403} is an apocalyptic number.

30505320323403 is a deficient number, since it is larger than the sum of its proper divisors (13219955321781).

30505320323403 is a wasteful number, since it uses less digits than its factorization.

30505320323403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3300731.

The product of its (nonzero) digits is 97200, while the sum is 33.

Adding to 30505320323403 its reverse (30432302350503), we get a palindrome (60937622673906).

The spelling of 30505320323403 in words is "thirty trillion, five hundred five billion, three hundred twenty million, three hundred twenty-three thousand, four hundred three".