305530140312 has 96 divisors (see below), whose sum is σ = 866403064800. Its totient is φ = 97082777088.

The previous prime is 305530140229. The next prime is 305530140359. The reversal of 305530140312 is 213041035503.

305530140312 is a `hidden beast` number, since 3 + 0 + 5 + 5 + 301 + 40 + 312 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 170364 + ... + 800052.

It is an arithmetic number, because the mean of its divisors is an integer number (9025031925).

Almost surely, 2^305530140312 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 305530140312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (433201532400).

305530140312 is an abundant number, since it is smaller than the sum of its proper divisors (560872924488).

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

305530140312 is a wasteful number, since it uses less digits than its factorization.

305530140312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 630017 (or 630010 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

Adding to 305530140312 its reverse (213041035503), we get a palindrome (518571175815).

The spelling of 305530140312 in words is "three hundred five billion, five hundred thirty million, one hundred forty thousand, three hundred twelve".