22031709317 has 4 divisors (see below), whose sum is σ = 23327692236. Its totient is φ = 20735726400.

The previous prime is 22031709307. The next prime is 22031709341. The reversal of 22031709317 is 71390713022.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 71390713022 = 2 ⋅35695356511.

It can be written as a sum of positive squares in 2 ways, for example, as 14239410241 + 7792299076 = 119329^2 + 88274^2 .

It is a cyclic number.

It is not a de Polignac number, because 22031709317 - 2⁶ = 22031709253 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22031709307) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 647991434 + ... + 647991467.

It is an arithmetic number, because the mean of its divisors is an integer number (5831923059).

Almost surely, 2^22031709317 is an apocalyptic number.

It is an amenable number.

22031709317 is a deficient number, since it is larger than the sum of its proper divisors (1295982919).

22031709317 is a wasteful number, since it uses less digits than its factorization.

22031709317 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295982918.

The product of its (nonzero) digits is 15876, while the sum is 35.

The spelling of 22031709317 in words is "twenty-two billion, thirty-one million, seven hundred nine thousand, three hundred seventeen".