30204311173 has 2 divisors, whose sum is σ = 30204311174. Its totient is φ = 30204311172.

The previous prime is 30204311171. The next prime is 30204311227. The reversal of 30204311173 is 37111340203.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 22075124929 + 8129186244 = 148577^2 + 90162^2 .

It is a cyclic number.

It is not a de Polignac number, because 30204311173 - 2¹ = 30204311171 is a prime.

Together with 30204311171, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30204311171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15102155586 + 15102155587.

It is an arithmetic number, because the mean of its divisors is an integer number (15102155587).

Almost surely, 2^30204311173 is an apocalyptic number.

It is an amenable number.

30204311173 is a deficient number, since it is larger than the sum of its proper divisors (1).

30204311173 is an equidigital number, since it uses as much as digits as its factorization.

30204311173 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 25.

Adding to 30204311173 its reverse (37111340203), we get a palindrome (67315651376).

The spelling of 30204311173 in words is "thirty billion, two hundred four million, three hundred eleven thousand, one hundred seventy-three".