305220535124 has 12 divisors (see below), whose sum is σ = 548572043124. Its totient is φ = 148485665664.

The previous prime is 305220535117. The next prime is 305220535153. The reversal of 305220535124 is 421535022503.

It can be written as a sum of positive squares in 2 ways, for example, as 255714285124 + 49506250000 = 505682^2 + 222500^2 .

It is a super-2 number, since 2×305220535124² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 1031150309 + ... + 1031150604.

It is an arithmetic number, because the mean of its divisors is an integer number (45714336927).

Almost surely, 2^305220535124 is an apocalyptic number.

It is an amenable number.

305220535124 is a deficient number, since it is larger than the sum of its proper divisors (243351508000).

305220535124 is a wasteful number, since it uses less digits than its factorization.

305220535124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2062300954 (or 2062300952 counting only the distinct ones).

The product of its (nonzero) digits is 36000, while the sum is 32.

Adding to 305220535124 its reverse (421535022503), we get a palindrome (726755557627).

The spelling of 305220535124 in words is "three hundred five billion, two hundred twenty million, five hundred thirty-five thousand, one hundred twenty-four".