31320101322 has 12 divisors (see below), whose sum is σ = 67860219570. Its totient is φ = 10440033768.

The previous prime is 31320101321. The next prime is 31320101327. The reversal of 31320101322 is 22310102313.

31320101322 is a `hidden beast` number, since 313 + 20 + 10 + 1 + 322 = 666.

It can be written as a sum of positive squares in only one way, i.e., 26695965321 + 4624136001 = 163389^2 + 68001^2 .

It is a super-2 number, since 2×31320101322² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (18), and also a Moran number because the ratio is a prime number: 1740005629 = 31320101322 / (3 + 1 + 3 + 2 + 0 + 1 + 0 + 1 + 3 + 2 + 2).

It is a junction number, because it is equal to n+sod(n) for n = 31320101295 and 31320101304.

It is not an unprimeable number, because it can be changed into a prime (31320101321) 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, 870002797 + ... + 870002832.

Almost surely, 2^31320101322 is an apocalyptic number.

31320101322 is an abundant number, since it is smaller than the sum of its proper divisors (36540118248).

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

31320101322 is a wasteful number, since it uses less digits than its factorization.

31320101322 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1740005637 (or 1740005634 counting only the distinct ones).

The product of its (nonzero) digits is 216, while the sum is 18.

Adding to 31320101322 its reverse (22310102313), we get a palindrome (53630203635).

Subtracting from 31320101322 its reverse (22310102313), we obtain a palindrome (9009999009).

The spelling of 31320101322 in words is "thirty-one billion, three hundred twenty million, one hundred one thousand, three hundred twenty-two".