305120135 has 16 divisors (see below), whose sum is σ = 378958080. Its totient is φ = 235595520.

The previous prime is 305120111. The next prime is 305120141. The reversal of 305120135 is 531021503.

It is not a de Polignac number, because 305120135 - 2²⁸ = 36684679 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 60989 + ... + 65801.

It is an arithmetic number, because the mean of its divisors is an integer number (23684880).

Almost surely, 2^305120135 is an apocalyptic number.

305120135 is a deficient number, since it is larger than the sum of its proper divisors (73837945).

305120135 is a wasteful number, since it uses less digits than its factorization.

305120135 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5258.

The product of its (nonzero) digits is 450, while the sum is 20.

The square root of 305120135 is about 17467.6883129967. The cubic root of 305120135 is about 673.2199169874.

Adding to 305120135 its reverse (531021503), we get a palindrome (836141638).

The spelling of 305120135 in words is "three hundred five million, one hundred twenty thousand, one hundred thirty-five".