831222323222138 has 8 divisors (see below), whose sum is σ = 1267273378027380. Its totient is φ = 408797863879680.

The previous prime is 831222323222129. The next prime is 831222323222143.

831222323222138 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 797950803408529 + 33271519813609 = 28248023^2 + 5768147^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 3406648865543 + ... + 3406648865786.

Almost surely, 2^{831222323222138} is an apocalyptic number.

831222323222138 is a deficient number, since it is larger than the sum of its proper divisors (436051054805242).

831222323222138 is a wasteful number, since it uses less digits than its factorization.

831222323222138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6813297731392.

The product of its digits is 663552, while the sum is 44.

The spelling of 831222323222138 in words is "eight hundred thirty-one trillion, two hundred twenty-two billion, three hundred twenty-three million, two hundred twenty-two thousand, one hundred thirty-eight".