31343312211105 has 64 divisors (see below), whose sum is σ = 53040666083328. Its totient is φ = 15781421134080.

The previous prime is 31343312211103. The next prime is 31343312211221. The reversal of 31343312211105 is 50111221334313.

It is not a de Polignac number, because 31343312211105 - 2¹ = 31343312211103 is a prime.

It is not an unprimeable number, because it can be changed into a prime (31343312211103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4373739 + ... + 9045231.

It is an arithmetic number, because the mean of its divisors is an integer number (828760407552).

Almost surely, 2^{31343312211105} is an apocalyptic number.

It is an amenable number.

31343312211105 is a deficient number, since it is larger than the sum of its proper divisors (21697353872223).

31343312211105 is a wasteful number, since it uses less digits than its factorization.

31343312211105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4671886.

The product of its (nonzero) digits is 6480, while the sum is 30.

Adding to 31343312211105 its reverse (50111221334313), we get a palindrome (81454533545418).

The spelling of 31343312211105 in words is "thirty-one trillion, three hundred forty-three billion, three hundred twelve million, two hundred eleven thousand, one hundred five".