30111120173 has 2 divisors, whose sum is σ = 30111120174. Its totient is φ = 30111120172.

The previous prime is 30111120139. The next prime is 30111120209. The reversal of 30111120173 is 37102111103.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21274556164 + 8836564009 = 145858^2 + 94003^2 .

It is a cyclic number.

It is not a de Polignac number, because 30111120173 - 2¹⁰ = 30111119149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (30111120133) 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 as a sum of consecutive naturals, namely, 15055560086 + 15055560087.

It is an arithmetic number, because the mean of its divisors is an integer number (15055560087).

Almost surely, 2^30111120173 is an apocalyptic number.

It is an amenable number.

30111120173 is a deficient number, since it is larger than the sum of its proper divisors (1).

30111120173 is an equidigital number, since it uses as much as digits as its factorization.

30111120173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 126, while the sum is 20.

Adding to 30111120173 its reverse (37102111103), we get a palindrome (67213231276).

The spelling of 30111120173 in words is "thirty billion, one hundred eleven million, one hundred twenty thousand, one hundred seventy-three".