305212232305 has 4 divisors (see below), whose sum is σ = 366254678772. Its totient is φ = 244169785840.

The previous prime is 305212232261. The next prime is 305212232363. The reversal of 305212232305 is 503232212503.

It is a happy number.

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 193453067889 + 111759164416 = 439833^2 + 334304^2 .

It is not a de Polignac number, because 305212232305 - 2⁷ = 305212232177 is a prime.

It is a super-2 number, since 2×305212232305² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30521223226 + ... + 30521223235.

It is an arithmetic number, because the mean of its divisors is an integer number (91563669693).

Almost surely, 2^305212232305 is an apocalyptic number.

It is an amenable number.

305212232305 is a deficient number, since it is larger than the sum of its proper divisors (61042446467).

305212232305 is an equidigital number, since it uses as much as digits as its factorization.

305212232305 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61042446466.

The product of its (nonzero) digits is 10800, while the sum is 28.

Adding to 305212232305 its reverse (503232212503), we get a palindrome (808444444808).

The spelling of 305212232305 in words is "three hundred five billion, two hundred twelve million, two hundred thirty-two thousand, three hundred five".