305235220144 has 40 divisors (see below), whose sum is σ = 637012657152. Its totient is φ = 141272957760.

The previous prime is 305235220123. The next prime is 305235220183. The reversal of 305235220144 is 441022532503.

It is a super-2 number, since 2×305235220144² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (31).

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, 13366714 + ... + 13389529.

Almost surely, 2^305235220144 is an apocalyptic number.

It is an amenable number.

305235220144 is an abundant number, since it is smaller than the sum of its proper divisors (331777437008).

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

305235220144 is a wasteful number, since it uses less digits than its factorization.

305235220144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26756305 (or 26756299 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

Adding to 305235220144 its reverse (441022532503), we get a palindrome (746257752647).

The spelling of 305235220144 in words is "three hundred five billion, two hundred thirty-five million, two hundred twenty thousand, one hundred forty-four".