321040431142605 has 16 divisors (see below), whose sum is σ = 570738544253760. Its totient is φ = 171221563275984.

The previous prime is 321040431142597. The next prime is 321040431142621. The reversal of 321040431142605 is 506241134040123.

321040431142605 is a `hidden beast` number, since 3 + 2 + 1 + 0 + 4 + 0 + 4 + 3 + 1 + 1 + 42 + 605 = 666.

It is not a de Polignac number, because 321040431142605 - 2³ = 321040431142597 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 321040431142605.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1189038633727 + ... + 1189038633996.

It is an arithmetic number, because the mean of its divisors is an integer number (35671159015860).

Almost surely, 2^{321040431142605} is an apocalyptic number.

It is an amenable number.

321040431142605 is a deficient number, since it is larger than the sum of its proper divisors (249698113111155).

321040431142605 is a wasteful number, since it uses less digits than its factorization.

321040431142605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2378077267737 (or 2378077267731 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

Adding to 321040431142605 its reverse (506241134040123), we get a palindrome (827281565182728).

The spelling of 321040431142605 in words is "three hundred twenty-one trillion, forty billion, four hundred thirty-one million, one hundred forty-two thousand, six hundred five".