321043124431040 has 168 divisors, whose sum is σ = 840570258790080. Its totient is φ = 116705480826880.

The previous prime is 321043124431027. The next prime is 321043124431069. The reversal of 321043124431040 is 40134421340123.

It is a Harshad number since it is a multiple of its sum of digits (32).

It is a junction number, because it is equal to n+sod(n) for n = 321043124430988 and 321043124431006.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 119438504 + ... + 122096856.

It is an arithmetic number, because the mean of its divisors is an integer number (5003394397560).

Almost surely, 2^{321043124431040} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 321043124431040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (420285129395040).

321043124431040 is an abundant number, since it is smaller than the sum of its proper divisors (519527134359040).

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

321043124431040 is a wasteful number, since it uses less digits than its factorization.

321043124431040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2661511 (or 2661490 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 32.

Adding to 321043124431040 its reverse (40134421340123), we get a palindrome (361177545771163).

The spelling of 321043124431040 in words is "three hundred twenty-one trillion, forty-three billion, one hundred twenty-four million, four hundred thirty-one thousand, forty".