31318277281313 has 16 divisors (see below), whose sum is σ = 36008026545600. Its totient is φ = 26939338087680.

The previous prime is 31318277281307. The next prime is 31318277281363.

31318277281313 is nontrivially palindromic in base 10.

It is a cyclic number.

It is not a de Polignac number, because 31318277281313 - 2¹⁰ = 31318277280289 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (31318277281363) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 92444156 + ... + 92782317.

It is an arithmetic number, because the mean of its divisors is an integer number (2250501659100).

Almost surely, 2^{31318277281313} is an apocalyptic number.

It is an amenable number.

31318277281313 is a deficient number, since it is larger than the sum of its proper divisors (4689749264287).

31318277281313 is a wasteful number, since it uses less digits than its factorization.

31318277281313 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 185227312.

The product of its digits is 1016064, while the sum is 50.

The spelling of 31318277281313 in words is "thirty-one trillion, three hundred eighteen billion, two hundred seventy-seven million, two hundred eighty-one thousand, three hundred thirteen".