31330322112221 has 8 divisors (see below), whose sum is σ = 34180150008384. Its totient is φ = 28480763681920.

The previous prime is 31330322112169. The next prime is 31330322112223. The reversal of 31330322112221 is 12221122303313.

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

It is not a de Polignac number, because 31330322112221 - 2¹⁴ = 31330322095837 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (31330322112223) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67123316 + ... + 67588461.

It is an arithmetic number, because the mean of its divisors is an integer number (4272518751048).

Almost surely, 2^{31330322112221} is an apocalyptic number.

It is an amenable number.

31330322112221 is a deficient number, since it is larger than the sum of its proper divisors (2849827896163).

31330322112221 is a wasteful number, since it uses less digits than its factorization.

31330322112221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134732931.

The product of its (nonzero) digits is 2592, while the sum is 26.

Adding to 31330322112221 its reverse (12221122303313), we get a palindrome (43551444415534).

The spelling of 31330322112221 in words is "thirty-one trillion, three hundred thirty billion, three hundred twenty-two million, one hundred twelve thousand, two hundred twenty-one".