31100312122 has 16 divisors (see below), whose sum is σ = 50913696672. Its totient is φ = 14130317520.

The previous prime is 31100312107. The next prime is 31100312141. The reversal of 31100312122 is 22121300113.

It is a junction number, because it is equal to n+sod(n) for n = 31100312096 and 31100312105.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 257808 + ... + 358699.

It is an arithmetic number, because the mean of its divisors is an integer number (3182106042).

Almost surely, 2^31100312122 is an apocalyptic number.

31100312122 is a deficient number, since it is larger than the sum of its proper divisors (19813384550).

31100312122 is a wasteful number, since it uses less digits than its factorization.

31100312122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 618813.

The product of its (nonzero) digits is 72, while the sum is 16.

Adding to 31100312122 its reverse (22121300113), we get a palindrome (53221612235).

The spelling of 31100312122 in words is "thirty-one billion, one hundred million, three hundred twelve thousand, one hundred twenty-two".