431121244321 has 8 divisors (see below), whose sum is σ = 449872377984. Its totient is φ = 412370671680.

The previous prime is 431121244319. The next prime is 431121244331. The reversal of 431121244321 is 123442121134.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 431121244321 - 2¹ = 431121244319 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 431121244321.

It is not an unprimeable number, because it can be changed into a prime (431121244331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2441161 + ... + 2611801.

It is an arithmetic number, because the mean of its divisors is an integer number (56234047248).

Almost surely, 2^431121244321 is an apocalyptic number.

It is an amenable number.

431121244321 is a deficient number, since it is larger than the sum of its proper divisors (18751133663).

431121244321 is a wasteful number, since it uses less digits than its factorization.

431121244321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280511.

The product of its digits is 4608, while the sum is 28.

Adding to 431121244321 its reverse (123442121134), we get a palindrome (554563365455).

The spelling of 431121244321 in words is "four hundred thirty-one billion, one hundred twenty-one million, two hundred forty-four thousand, three hundred twenty-one".