321143112431 has 8 divisors (see below), whose sum is σ = 325218420480. Its totient is φ = 317068059672.

The previous prime is 321143112421. The next prime is 321143112439. The reversal of 321143112431 is 134211341123.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-321143112431 is a prime.

It is a super-3 number, since 3×321143112431³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 321143112431.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (321143112439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4865456 + ... + 4931018.

It is an arithmetic number, because the mean of its divisors is an integer number (40652302560).

Almost surely, 2^321143112431 is an apocalyptic number.

321143112431 is a deficient number, since it is larger than the sum of its proper divisors (4075308049).

321143112431 is an equidigital number, since it uses as much as digits as its factorization.

321143112431 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 127645.

The product of its digits is 1728, while the sum is 26.

Adding to 321143112431 its reverse (134211341123), we get a palindrome (455354453554).

The spelling of 321143112431 in words is "three hundred twenty-one billion, one hundred forty-three million, one hundred twelve thousand, four hundred thirty-one".