321040020024243 has 32 divisors (see below), whose sum is σ = 512202107305280. Its totient is φ = 197562508531200.

The previous prime is 321040020024239. The next prime is 321040020024253. The reversal of 321040020024243 is 342420020040123.

321040020024243 is a `hidden beast` number, since 3 + 2 + 10 + 400 + 2 + 0 + 0 + 2 + 4 + 243 = 666.

It is not a de Polignac number, because 321040020024243 - 2² = 321040020024239 is a prime.

It is a super-3 number, since 3×321040020024243³ (a number of 44 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (321040020024253) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 139115505 + ... + 141404397.

It is an arithmetic number, because the mean of its divisors is an integer number (16006315853290).

Almost surely, 2^{321040020024243} is an apocalyptic number.

321040020024243 is a deficient number, since it is larger than the sum of its proper divisors (191162087281037).

321040020024243 is a wasteful number, since it uses less digits than its factorization.

321040020024243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2688516 (or 2688510 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 27.

Adding to 321040020024243 its reverse (342420020040123), we get a palindrome (663460040064366).

The spelling of 321040020024243 in words is "three hundred twenty-one trillion, forty billion, twenty million, twenty-four thousand, two hundred forty-three".