30503230517 has 2 divisors, whose sum is σ = 30503230518. Its totient is φ = 30503230516.

The previous prime is 30503230489. The next prime is 30503230519. The reversal of 30503230517 is 71503230503.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18819998596 + 11683231921 = 137186^2 + 108089^2 .

It is an emirp because it is prime and its reverse (71503230503) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 30503230517 - 2³⁴ = 13323361333 is a prime.

Together with 30503230519, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 30503230517.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30503230519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15251615258 + 15251615259.

It is an arithmetic number, because the mean of its divisors is an integer number (15251615259).

Almost surely, 2^30503230517 is an apocalyptic number.

It is an amenable number.

30503230517 is a deficient number, since it is larger than the sum of its proper divisors (1).

30503230517 is an equidigital number, since it uses as much as digits as its factorization.

30503230517 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9450, while the sum is 29.

The spelling of 30503230517 in words is "thirty billion, five hundred three million, two hundred thirty thousand, five hundred seventeen".