30503204293 has 4 divisors (see below), whose sum is σ = 30773144268. Its totient is φ = 30233264320.

The previous prime is 30503204287. The next prime is 30503204311. The reversal of 30503204293 is 39240230503.

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

It can be written as a sum of positive squares in 2 ways, for example, as 11154950689 + 19348253604 = 105617^2 + 139098^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-30503204293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30503204203) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 134969818 + ... + 134970043.

It is an arithmetic number, because the mean of its divisors is an integer number (7693286067).

Almost surely, 2^30503204293 is an apocalyptic number.

It is an amenable number.

30503204293 is a deficient number, since it is larger than the sum of its proper divisors (269939975).

30503204293 is a wasteful number, since it uses less digits than its factorization.

30503204293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 269939974.

The product of its (nonzero) digits is 19440, while the sum is 31.

Adding to 30503204293 its reverse (39240230503), we get a palindrome (69743434796).

The spelling of 30503204293 in words is "thirty billion, five hundred three million, two hundred four thousand, two hundred ninety-three".