305111130 has 32 divisors (see below), whose sum is σ = 733644864. Its totient is φ = 81209856.

The previous prime is 305111119. The next prime is 305111153. The reversal of 305111130 is 31111503.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 7114 + ... + 25706.

It is an arithmetic number, because the mean of its divisors is an integer number (22926402).

Almost surely, 2^305111130 is an apocalyptic number.

305111130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

305111130 is an abundant number, since it is smaller than the sum of its proper divisors (428533734).

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

305111130 is a wasteful number, since it uses less digits than its factorization.

305111130 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19150.

The product of its (nonzero) digits is 45, while the sum is 15.

The square root of 305111130 is about 17467.4305494540. The cubic root of 305111130 is about 673.2132940168.

Adding to 305111130 its reverse (31111503), we get a palindrome (336222633).

The spelling of 305111130 in words is "three hundred five million, one hundred eleven thousand, one hundred thirty".