31123131322 has 8 divisors (see below), whose sum is σ = 46747872000. Its totient is φ = 15540507324.

The previous prime is 31123131311. The next prime is 31123131323. The reversal of 31123131322 is 22313132113.

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 = 31123131293 and 31123131302.

It is not an unprimeable number, because it can be changed into a prime (31123131323) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10527322 + ... + 10530277.

It is an arithmetic number, because the mean of its divisors is an integer number (5843484000).

Almost surely, 2^31123131322 is an apocalyptic number.

31123131322 is a deficient number, since it is larger than the sum of its proper divisors (15624740678).

31123131322 is a wasteful number, since it uses less digits than its factorization.

31123131322 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21058340.

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

Adding to 31123131322 its reverse (22313132113), we get a palindrome (53436263435).

The spelling of 31123131322 in words is "thirty-one billion, one hundred twenty-three million, one hundred thirty-one thousand, three hundred twenty-two".