31320320323122 has 12 divisors (see below), whose sum is σ = 67860694033470. Its totient is φ = 10440106774368.

The previous prime is 31320320323099. The next prime is 31320320323129. The reversal of 31320320323122 is 22132302302313.

31320320323122 is a `hidden beast` number, since 3 + 1 + 3 + 2 + 0 + 320 + 323 + 12 + 2 = 666.

It can be written as a sum of positive squares in only one way, i.e., 17767312486641 + 13553007836481 = 4215129^2 + 3681441^2 .

It is not an unprimeable number, because it can be changed into a prime (31320320323129) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 870008897847 + ... + 870008897882.

Almost surely, 2^{31320320323122} is an apocalyptic number.

31320320323122 is an abundant number, since it is smaller than the sum of its proper divisors (36540373710348).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

31320320323122 is a wasteful number, since it uses less digits than its factorization.

31320320323122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1740017795737 (or 1740017795734 counting only the distinct ones).

The product of its (nonzero) digits is 7776, while the sum is 27.

Adding to 31320320323122 its reverse (22132302302313), we get a palindrome (53452622625435).

The spelling of 31320320323122 in words is "thirty-one trillion, three hundred twenty billion, three hundred twenty million, three hundred twenty-three thousand, one hundred twenty-two".