321240101400243 has 12 divisors (see below), whose sum is σ = 465738436977840. Its totient is φ = 213363933518256.

The previous prime is 321240101400241. The next prime is 321240101400289. The reversal of 321240101400243 is 342004101042123.

321240101400243 is a `hidden beast` number, since 3 + 2 + 1 + 2 + 4 + 0 + 10 + 1 + 400 + 243 = 666.

It is not a de Polignac number, because 321240101400243 - 2¹ = 321240101400241 is a prime.

It is not an unprimeable number, because it can be changed into a prime (321240101400241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 66344504271 + ... + 66344509112.

It is an arithmetic number, because the mean of its divisors is an integer number (38811536414820).

Almost surely, 2^{321240101400243} is an apocalyptic number.

321240101400243 is a deficient number, since it is larger than the sum of its proper divisors (144498335577597).

321240101400243 is a wasteful number, since it uses less digits than its factorization.

321240101400243 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132689013658 (or 132689013655 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 321240101400243 its reverse (342004101042123), we get a palindrome (663244202442366).

The spelling of 321240101400243 in words is "three hundred twenty-one trillion, two hundred forty billion, one hundred one million, four hundred thousand, two hundred forty-three".