305130212 has 24 divisors (see below), whose sum is σ = 565931520. Its totient is φ = 143452800.

The previous prime is 305130173. The next prime is 305130223. The reversal of 305130212 is 212031503.

It is a Harshad number since it is a multiple of its sum of digits (17).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 118337 + ... + 120887.

It is an arithmetic number, because the mean of its divisors is an integer number (23580480).

Almost surely, 2^305130212 is an apocalyptic number.

It is an amenable number.

305130212 is a deficient number, since it is larger than the sum of its proper divisors (260801308).

305130212 is a wasteful number, since it uses less digits than its factorization.

305130212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4331 (or 4329 counting only the distinct ones).

The product of its (nonzero) digits is 180, while the sum is 17.

The square root of 305130212 is about 17467.9767574840. The cubic root of 305130212 is about 673.2273282348.

Adding to 305130212 its reverse (212031503), we get a palindrome (517161715).

The spelling of 305130212 in words is "three hundred five million, one hundred thirty thousand, two hundred twelve".