305143412 has 12 divisors (see below), whose sum is σ = 610286880. Its totient is φ = 130775736.

The previous prime is 305143381. The next prime is 305143417. The reversal of 305143412 is 214341503.

305143412 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

305143412 is an admirable number.

It is a super-2 number, since 2×305143412² = 186225003774003488, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305143417) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5448962 + ... + 5449017.

It is an arithmetic number, because the mean of its divisors is an integer number (50857240).

Almost surely, 2^305143412 is an apocalyptic number.

It is an amenable number.

305143412 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

305143412 is a wasteful number, since it uses less digits than its factorization.

305143412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10897990 (or 10897988 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 305143412 is about 17468.3545876536. The cubic root of 305143412 is about 673.2370360821.

Adding to 305143412 its reverse (214341503), we get a palindrome (519484915).

The spelling of 305143412 in words is "three hundred five million, one hundred forty-three thousand, four hundred twelve".