1312011013223 has 4 divisors (see below), whose sum is σ = 1312108945200. Its totient is φ = 1311913081248.

The previous prime is 1312011013189. The next prime is 1312011013279. The reversal of 1312011013223 is 3223101102131.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1312011013223 - 2¹⁴ = 1312010996839 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1312011013195 and 1312011013204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312011013723) 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 3 ways as a sum of consecutive naturals, for example, 48945890 + ... + 48972687.

It is an arithmetic number, because the mean of its divisors is an integer number (328027236300).

Almost surely, 2^{1312011013223} is an apocalyptic number.

1312011013223 is a deficient number, since it is larger than the sum of its proper divisors (97931977).

1312011013223 is an equidigital number, since it uses as much as digits as its factorization.

1312011013223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97931976.

The product of its (nonzero) digits is 216, while the sum is 20.

Adding to 1312011013223 its reverse (3223101102131), we get a palindrome (4535112115354).

The spelling of 1312011013223 in words is "one trillion, three hundred twelve billion, eleven million, thirteen thousand, two hundred twenty-three".