306143012 has 24 divisors (see below), whose sum is σ = 620040960. Its totient is φ = 129542400.

The previous prime is 306143003. The next prime is 306143039. The reversal of 306143012 is 210341603.

It is a super-3 number, since 3×306143012³ (a number of 26 digits) contains 333 as substring.

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, 66989 + ... + 71412.

It is an arithmetic number, because the mean of its divisors is an integer number (25835040).

Almost surely, 2^306143012 is an apocalyptic number.

It is an amenable number.

306143012 is an abundant number, since it is smaller than the sum of its proper divisors (313897948).

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

306143012 is a wasteful number, since it uses less digits than its factorization.

306143012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 138491 (or 138489 counting only the distinct ones).

The product of its (nonzero) digits is 432, while the sum is 20.

The square root of 306143012 is about 17496.9429329812. The cubic root of 306143012 is about 673.9713730148.

Adding to 306143012 its reverse (210341603), we get a palindrome (516484615).

The spelling of 306143012 in words is "three hundred six million, one hundred forty-three thousand, twelve".