31122310105 has 8 divisors (see below), whose sum is σ = 37959014664. Its totient is φ = 24489686400.

The previous prime is 31122310081. The next prime is 31122310133. The reversal of 31122310105 is 50101322113.

It can be written as a sum of positive squares in 4 ways, for example, as 2611312201 + 28510997904 = 51101^2 + 168852^2 .

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

It is not a de Polignac number, because 31122310105 - 2⁵ = 31122310073 is a prime.

It is a super-2 number, since 2×31122310105² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 51019876 + ... + 51020485.

It is an arithmetic number, because the mean of its divisors is an integer number (4744876833).

Almost surely, 2^31122310105 is an apocalyptic number.

It is an amenable number.

31122310105 is a deficient number, since it is larger than the sum of its proper divisors (6836704559).

31122310105 is a wasteful number, since it uses less digits than its factorization.

31122310105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 102040427.

The product of its (nonzero) digits is 180, while the sum is 19.

Adding to 31122310105 its reverse (50101322113), we get a palindrome (81223632218).

The spelling of 31122310105 in words is "thirty-one billion, one hundred twenty-two million, three hundred ten thousand, one hundred five".