305144130 has 32 divisors (see below), whose sum is σ = 743281344. Its totient is φ = 80156736.

The previous prime is 305144117. The next prime is 305144141. The reversal of 305144130 is 31441503.

It is a super-2 number, since 2×305144130² = 186225880146913800, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 305144097 and 305144106.

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, 73897 + ... + 77916.

It is an arithmetic number, because the mean of its divisors is an integer number (23227542).

Almost surely, 2^305144130 is an apocalyptic number.

305144130 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

305144130 is an abundant number, since it is smaller than the sum of its proper divisors (438137214).

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

305144130 is a wasteful number, since it uses less digits than its factorization.

305144130 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 151890.

The product of its (nonzero) digits is 720, while the sum is 21.

The square root of 305144130 is about 17468.3751390906. The cubic root of 305144130 is about 673.2375641222.

Adding to 305144130 its reverse (31441503), we get a palindrome (336585633).

The spelling of 305144130 in words is "three hundred five million, one hundred forty-four thousand, one hundred thirty".