31121331322 has 8 divisors (see below), whose sum is σ = 46759932000. Its totient is φ = 15534687324.

The previous prime is 31121331247. The next prime is 31121331323. The reversal of 31121331322 is 22313312113.

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 = 31121331293 and 31121331302.

It is not an unprimeable number, because it can be changed into a prime (31121331323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12987672 + ... + 12990067.

It is an arithmetic number, because the mean of its divisors is an integer number (5844991500).

Almost surely, 2^31121331322 is an apocalyptic number.

31121331322 is a deficient number, since it is larger than the sum of its proper divisors (15638600678).

31121331322 is a wasteful number, since it uses less digits than its factorization.

31121331322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25978340.

The product of its digits is 648, while the sum is 22.

Adding to 31121331322 its reverse (22313312113), we get a palindrome (53434643435).

The spelling of 31121331322 in words is "thirty-one billion, one hundred twenty-one million, three hundred thirty-one thousand, three hundred twenty-two".