305344433140 has 12 divisors (see below), whose sum is σ = 641223309636. Its totient is φ = 122137773248.

The previous prime is 305344433129. The next prime is 305344433143. The reversal of 305344433140 is 41334443503.

It can be written as a sum of positive squares in 2 ways, for example, as 89671500304 + 215672932836 = 299452^2 + 464406^2 .

It is a junction number, because it is equal to n+sod(n) for n = 305344433096 and 305344433105.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (305344433143) 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, 7633610809 + ... + 7633610848.

It is an arithmetic number, because the mean of its divisors is an integer number (53435275803).

Almost surely, 2^305344433140 is an apocalyptic number.

It is an amenable number.

305344433140 is an abundant number, since it is smaller than the sum of its proper divisors (335878876496).

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

305344433140 is a wasteful number, since it uses less digits than its factorization.

305344433140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15267221666 (or 15267221664 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 34.

Adding to 305344433140 its reverse (41334443503), we get a palindrome (346678876643).

The spelling of 305344433140 in words is "three hundred five billion, three hundred forty-four million, four hundred thirty-three thousand, one hundred forty".