30231440321 has 4 divisors (see below), whose sum is σ = 30233631792. Its totient is φ = 30229248852.

The previous prime is 30231440273. The next prime is 30231440333. The reversal of 30231440321 is 12304413203.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 30231440321 - 2⁶ = 30231440257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30231446321) 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 3 ways as a sum of consecutive naturals, for example, 1074911 + ... + 1102676.

It is an arithmetic number, because the mean of its divisors is an integer number (7558407948).

Almost surely, 2^30231440321 is an apocalyptic number.

It is an amenable number.

30231440321 is a deficient number, since it is larger than the sum of its proper divisors (2191471).

30231440321 is a wasteful number, since it uses less digits than its factorization.

30231440321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2191470.

The product of its (nonzero) digits is 1728, while the sum is 23.

Adding to 30231440321 its reverse (12304413203), we get a palindrome (42535853524).

The spelling of 30231440321 in words is "thirty billion, two hundred thirty-one million, four hundred forty thousand, three hundred twenty-one".