305130 has 32 divisors (see below), whose sum is σ = 837504. Its totient is φ = 69696.

The previous prime is 305119. The next prime is 305131. The reversal of 305130 is 31503.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (305131) by changing a digit.

305130 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 517 + ... + 936.

It is an arithmetic number, because the mean of its divisors is an integer number (26172).

2³⁰⁵¹³⁰ is an apocalyptic number.

305130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

305130 is an abundant number, since it is smaller than the sum of its proper divisors (532374).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

305130 is a wasteful number, since it uses less digits than its factorization.

305130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1470.

The product of its (nonzero) digits is 45, while the sum is 12.

The square root of 305130 is about 552.3857347905. The cubic root of 305130 is about 67.3227172319.

Adding to 305130 its reverse (31503), we get a palindrome (336633).

It can be divided in two parts, 3051 and 30, that added together give a triangular number (3081 = T₇₈).

The spelling of 305130 in words is "three hundred five thousand, one hundred thirty".