1312311302211 has 64 divisors (see below), whose sum is σ = 2283903820800. Its totient is φ = 650436120576.

The previous prime is 1312311302161. The next prime is 1312311302213. The reversal of 1312311302211 is 1122031132131.

It is not a de Polignac number, because 1312311302211 - 2¹⁷ = 1312311171139 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is not an unprimeable number, because it can be changed into a prime (1312311302213) by changing a digit.

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 63 ways as a sum of consecutive naturals, for example, 2644375 + ... + 3101183.

It is an arithmetic number, because the mean of its divisors is an integer number (35685997200).

Almost surely, 2^{1312311302211} is an apocalyptic number.

1312311302211 is a deficient number, since it is larger than the sum of its proper divisors (971592518589).

1312311302211 is a wasteful number, since it uses less digits than its factorization.

1312311302211 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457468.

The product of its (nonzero) digits is 216, while the sum is 21.

Adding to 1312311302211 its reverse (1122031132131), we get a palindrome (2434342434342).

The spelling of 1312311302211 in words is "one trillion, three hundred twelve billion, three hundred eleven million, three hundred two thousand, two hundred eleven".