30230231440 has 20 divisors (see below), whose sum is σ = 70285288284. Its totient is φ = 12092092544.

The previous prime is 30230231399. The next prime is 30230231443. The reversal of 30230231440 is 4413203203.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 20217427344 + 10012804096 = 142188^2 + 100064^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is not an unprimeable number, because it can be changed into a prime (30230231443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 188938867 + ... + 188939026.

Almost surely, 2^30230231440 is an apocalyptic number.

It is an amenable number.

30230231440 is an abundant number, since it is smaller than the sum of its proper divisors (40055056844).

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

30230231440 is a wasteful number, since it uses less digits than its factorization.

30230231440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377877906 (or 377877900 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 30230231440 its reverse (4413203203), we get a palindrome (34643434643).

The spelling of 30230231440 in words is "thirty billion, two hundred thirty million, two hundred thirty-one thousand, four hundred forty".