305133203140 has 24 divisors (see below), whose sum is σ = 640879327872. Its totient is φ = 122034309600.

The previous prime is 305133203119. The next prime is 305133203147. The reversal of 305133203140 is 41302331503.

It is not an unprimeable number, because it can be changed into a prime (305133203147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1053484 + ... + 1311523.

It is an arithmetic number, because the mean of its divisors is an integer number (26703305328).

Almost surely, 2^305133203140 is an apocalyptic number.

It is an amenable number.

305133203140 is an abundant number, since it is smaller than the sum of its proper divisors (335746124732).

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

305133203140 is a wasteful number, since it uses less digits than its factorization.

305133203140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2371467 (or 2371465 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 25.

Adding to 305133203140 its reverse (41302331503), we get a palindrome (346435534643).

The spelling of 305133203140 in words is "three hundred five billion, one hundred thirty-three million, two hundred three thousand, one hundred forty".