31122310122 has 24 divisors (see below), whose sum is σ = 68999852064. Its totient is φ = 10132844904.

The previous prime is 31122310081. The next prime is 31122310133. The reversal of 31122310122 is 22101322113.

31122310122 is a `hidden beast` number, since 311 + 2 + 231 + 0 + 122 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 31122310095 and 31122310104.

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 11 ways as a sum of consecutive naturals, for example, 20104078 + ... + 20105625.

It is an arithmetic number, because the mean of its divisors is an integer number (2874993836).

Almost surely, 2^31122310122 is an apocalyptic number.

31122310122 is an abundant number, since it is smaller than the sum of its proper divisors (37877541942).

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

31122310122 is a wasteful number, since it uses less digits than its factorization.

31122310122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40209754 (or 40209751 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

Adding to 31122310122 its reverse (22101322113), we get a palindrome (53223632235).

The spelling of 31122310122 in words is "thirty-one billion, one hundred twenty-two million, three hundred ten thousand, one hundred twenty-two".