305240034173 has 2 divisors, whose sum is σ = 305240034174. Its totient is φ = 305240034172.

The previous prime is 305240034167. The next prime is 305240034217. The reversal of 305240034173 is 371430042503.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 294955437604 + 10284596569 = 543098^2 + 101413^2 .

It is a cyclic number.

It is not a de Polignac number, because 305240034173 - 2⁴ = 305240034157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (305240037173) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152620017086 + 152620017087.

It is an arithmetic number, because the mean of its divisors is an integer number (152620017087).

Almost surely, 2^305240034173 is an apocalyptic number.

It is an amenable number.

305240034173 is a deficient number, since it is larger than the sum of its proper divisors (1).

305240034173 is an equidigital number, since it uses as much as digits as its factorization.

305240034173 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 32.

Adding to 305240034173 its reverse (371430042503), we get a palindrome (676670076676).

The spelling of 305240034173 in words is "three hundred five billion, two hundred forty million, thirty-four thousand, one hundred seventy-three".