30244340281 has 3 divisors (see below), whose sum is σ = 30244514191. Its totient is φ = 30244166372.

The previous prime is 30244340227. The next prime is 30244340299. The reversal of 30244340281 is 18204344203.

It is a happy number.

The square root of 30244340281 is 173909.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 18204344203 = 29 ⋅627736007.

It can be written as a sum of positive squares in only one way, i.e., 1119504681 + 29124835600 = 33459^2 + 170660^2 .

It is not a de Polignac number, because 30244340281 - 2²³ = 30235951673 is a prime.

It is a super-2 number, since 2×30244340281² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30244349281) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 86955 + ... + 260863.

Almost surely, 2^30244340281 is an apocalyptic number.

30244340281 is the 173909-th square number.

30244340281 is the 86955-th centered octagonal number.

It is an amenable number.

30244340281 is a deficient number, since it is larger than the sum of its proper divisors (173910).

30244340281 is an frugal number, since it uses more digits than its factorization.

30244340281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347818 (or 173909 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 30244340281 its reverse (18204344203), we get a palindrome (48448684484).

The spelling of 30244340281 in words is "thirty billion, two hundred forty-four million, three hundred forty thousand, two hundred eighty-one".