31321201322 has 8 divisors (see below), whose sum is σ = 46985125572. Its totient is φ = 15659492800.

The previous prime is 31321201297. The next prime is 31321201343. The reversal of 31321201322 is 22310212313.

It can be written as a sum of positive squares in 2 ways, for example, as 29973650641 + 1347550681 = 173129^2 + 36709^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 31321201294 and 31321201303.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 518129 + ... + 575412.

Almost surely, 2^31321201322 is an apocalyptic number.

31321201322 is a deficient number, since it is larger than the sum of its proper divisors (15663924250).

31321201322 is a wasteful number, since it uses less digits than its factorization.

31321201322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1107864.

The product of its (nonzero) digits is 432, while the sum is 20.

Adding to 31321201322 its reverse (22310212313), we get a palindrome (53631413635).

The spelling of 31321201322 in words is "thirty-one billion, three hundred twenty-one million, two hundred one thousand, three hundred twenty-two".