305235255361 has 3 divisors (see below), whose sum is σ = 305235807843. Its totient is φ = 305234702880.

The previous prime is 305235255319. The next prime is 305235255383. The reversal of 305235255361 is 163552532503.

The square root of 305235255361 is 552481.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 163552532503 = 11813 ⋅13845131.

It can be written as a sum of positive squares in only one way, i.e., 398760961 + 304836494400 = 19969^2 + 552120^2 .

It is not a de Polignac number, because 305235255361 - 2⁷ = 305235255233 is a prime.

It is a super-2 number, since 2×305235255361² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (305235255761) by changing a digit.

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 2 ways as a sum of consecutive naturals, for example, 276241 + ... + 828721.

It is an arithmetic number, because the mean of its divisors is an integer number (101745269281).

Almost surely, 2^305235255361 is an apocalyptic number.

305235255361 is the 552481-st square number.

305235255361 is the 276241-st centered octagonal number.

It is an amenable number.

305235255361 is a deficient number, since it is larger than the sum of its proper divisors (552482).

305235255361 is an frugal number, since it uses more digits than its factorization.

305235255361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1104962 (or 552481 counting only the distinct ones).

The product of its (nonzero) digits is 405000, while the sum is 40.

Adding to 305235255361 its reverse (163552532503), we get a palindrome (468787787864).

The spelling of 305235255361 in words is "three hundred five billion, two hundred thirty-five million, two hundred fifty-five thousand, three hundred sixty-one".