1312223122311 has 4 divisors (see below), whose sum is σ = 1749630829752. Its totient is φ = 874815414872.

The previous prime is 1312223122291. The next prime is 1312223122363. The reversal of 1312223122311 is 1132213222131.

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 1312223122311 - 2¹³ = 1312223114119 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1312223122411) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 218703853716 + ... + 218703853721.

It is an arithmetic number, because the mean of its divisors is an integer number (437407707438).

Almost surely, 2^{1312223122311} is an apocalyptic number.

1312223122311 is a deficient number, since it is larger than the sum of its proper divisors (437407707441).

1312223122311 is an equidigital number, since it uses as much as digits as its factorization.

1312223122311 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 437407707440.

The product of its digits is 864, while the sum is 24.

Adding to 1312223122311 its reverse (1132213222131), we get a palindrome (2444436344442).

The spelling of 1312223122311 in words is "one trillion, three hundred twelve billion, two hundred twenty-three million, one hundred twenty-two thousand, three hundred eleven".