31144504012105 has 32 divisors (see below), whose sum is σ = 40909626315648. Its totient is φ = 22573657075200.

The previous prime is 31144504012067. The next prime is 31144504012187. The reversal of 31144504012105 is 50121040544113.

It is not a de Polignac number, because 31144504012105 - 2¹⁹ = 31144503487817 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18290335 + ... + 19920475.

It is an arithmetic number, because the mean of its divisors is an integer number (1278425822364).

Almost surely, 2^{31144504012105} is an apocalyptic number.

It is an amenable number.

31144504012105 is a deficient number, since it is larger than the sum of its proper divisors (9765122303543).

31144504012105 is a wasteful number, since it uses less digits than its factorization.

31144504012105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1631337.

The product of its (nonzero) digits is 9600, while the sum is 31.

Adding to 31144504012105 its reverse (50121040544113), we get a palindrome (81265544556218).

The spelling of 31144504012105 in words is "thirty-one trillion, one hundred forty-four billion, five hundred four million, twelve thousand, one hundred five".