321231971843 has 8 divisors (see below), whose sum is σ = 325395478800. Its totient is φ = 317075447008.

The previous prime is 321231971821. The next prime is 321231971849. The reversal of 321231971843 is 348179132123.

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 321231971843 - 2¹⁸ = 321231709699 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 321231971794 and 321231971803.

It is not an unprimeable number, because it can be changed into a prime (321231971849) 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 7 ways as a sum of consecutive naturals, for example, 1652888 + ... + 1836981.

It is an arithmetic number, because the mean of its divisors is an integer number (40674434850).

Almost surely, 2^321231971843 is an apocalyptic number.

321231971843 is a deficient number, since it is larger than the sum of its proper divisors (4163506957).

321231971843 is a wasteful number, since it uses less digits than its factorization.

321231971843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3491061.

The product of its digits is 217728, while the sum is 44.

The spelling of 321231971843 in words is "three hundred twenty-one billion, two hundred thirty-one million, nine hundred seventy-one thousand, eight hundred forty-three".